| Base | Representation |
|---|---|
| bin | 11100111110011000… |
| … | …101010100001111100 |
| 3 | 2222022012122002122120 |
| 4 | 130332120222201330 |
| 5 | 1002204011032444 |
| 6 | 22143053442540 |
| 7 | 2150653512264 |
| oct | 347630524174 |
| 9 | 88265562576 |
| 10 | 31111424124 |
| 11 | 12215651470 |
| 12 | 60431a0450 |
| 13 | 2c1a715901 |
| 14 | 1711cbc7a4 |
| 15 | c214b9b19 |
| hex | 73e62a87c |
31111424124 has 96 divisors (see below), whose sum is σ = 83905549056. Its totient is φ = 8867374080.
The previous prime is 31111424089. The next prime is 31111424129. The reversal of 31111424124 is 42142411113.
It is a happy number.
It is a super-2 number, since 2×311114241242 (a number of 22 digits) contains 22 as substring.
It is a nude number because it is divisible by every one of its digits.
It is a junction number, because it is equal to n+sod(n) for n = 31111424094 and 31111424103.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (31111424129) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4423899 + ... + 4430925.
It is an arithmetic number, because the mean of its divisors is an integer number (874016136).
Almost surely, 231111424124 is an apocalyptic number.
31111424124 is a gapful number since it is divisible by the number (34) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 31111424124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41952774528).
31111424124 is an abundant number, since it is smaller than the sum of its proper divisors (52794124932).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
31111424124 is a wasteful number, since it uses less digits than its factorization.
31111424124 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 9035 (or 9033 counting only the distinct ones).
The product of its digits is 768, while the sum is 24.
Adding to 31111424124 its reverse (42142411113), we get a palindrome (73253835237).
The spelling of 31111424124 in words is "thirty-one billion, one hundred eleven million, four hundred twenty-four thousand, one hundred twenty-four".
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