Base | Representation |
---|---|
bin | 11100001001111010… |
… | …001110110011111000 |
3 | 2220000212000111101000 |
4 | 130021322032303320 |
5 | 443403120443112 |
6 | 21515443525000 |
7 | 2120103344466 |
oct | 341172166370 |
9 | 86025014330 |
10 | 30231031032 |
11 | 119036a1074 |
12 | 5a38389760 |
13 | 2b0a1c5757 |
14 | 166adc7836 |
15 | bbe0627dc |
hex | 709e8ecf8 |
30231031032 has 32 divisors (see below), whose sum is σ = 83975086800. Its totient is φ = 10077010272.
The previous prime is 30231031027. The next prime is 30231031057. The reversal of 30231031032 is 23013013203.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a junction number, because it is equal to n+sod(n) for n = 30231030996 and 30231031014.
It is a congruent number.
It is an unprimeable number.
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 7 ways as a sum of consecutive naturals, for example, 69979023 + ... + 69979454.
Almost surely, 230231031032 is an apocalyptic number.
It is an amenable number.
30231031032 is an abundant number, since it is smaller than the sum of its proper divisors (53744055768).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30231031032 is a wasteful number, since it uses less digits than its factorization.
30231031032 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 139958492 (or 139958482 counting only the distinct ones).
The product of its (nonzero) digits is 324, while the sum is 18.
Adding to 30231031032 its reverse (23013013203), we get a palindrome (53244044235).
The spelling of 30231031032 in words is "thirty billion, two hundred thirty-one million, thirty-one thousand, thirty-two".
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