| Base | Representation |
|---|---|
| bin | 1100001110011011010… |
| … | …1100100000010010000 |
| 3 | 202002010102211000122221 |
| 4 | 3003212311210002100 |
| 5 | 11420120443343440 |
| 6 | 240253110110424 |
| 7 | 21113525002534 |
| oct | 3034665440220 |
| 9 | 662112730587 |
| 10 | 210031231120 |
| 11 | 8108a177657 |
| 12 | 3485704b414 |
| 13 | 16a62622aa9 |
| 14 | a246453bc4 |
| 15 | 56e3e50d4a |
| hex | 30e6d64090 |
210031231120 has 80 divisors (see below), whose sum is σ = 502000713648. Its totient is φ = 81663621120.
The previous prime is 210031231043. The next prime is 210031231129. The reversal of 210031231120 is 21132130012.
It can be written as a sum of positive squares in 8 ways, for example, as 1792336896 + 208238894224 = 42336^2 + 456332^2 .
It is a tau number, because it is divible by the number of its divisors (80).
It is a super-2 number, since 2×2100312311202 (a number of 23 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (16).
It is a junction number, because it is equal to n+sod(n) for n = 210031231094 and 210031231103.
It is not an unprimeable number, because it can be changed into a prime (210031231129) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3107122 + ... + 3173998.
Almost surely, 2210031231120 is an apocalyptic number.
210031231120 is a gapful number since it is divisible by the number (20) 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 210031231120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251000356824).
210031231120 is an abundant number, since it is smaller than the sum of its proper divisors (291969482528).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
210031231120 is a wasteful number, since it uses less digits than its factorization.
210031231120 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 67988 (or 67982 counting only the distinct ones).
The product of its (nonzero) digits is 72, while the sum is 16.
Adding to 210031231120 its reverse (21132130012), we get a palindrome (231163361132).
The spelling of 210031231120 in words is "two hundred ten billion, thirty-one million, two hundred thirty-one thousand, one hundred twenty".
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