31255424032 has 24 divisors (see below), whose sum is σ = 70324704576. Its totient is φ = 13395181632.

The previous prime is 31255424021. The next prime is 31255424033. The reversal of 31255424032 is 23042455213.

It is a junction number, because it is equal to n+sod(n) for n = 31255423985 and 31255424003.

It is not an unprimeable number, because it can be changed into a prime (31255424033) 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 3 ways as a sum of consecutive naturals, for example, 69766348 + ... + 69766795.

It is an arithmetic number, because the mean of its divisors is an integer number (2930196024).

Almost surely, 2^31255424032 is an apocalyptic number.

31255424032 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31255424032 is an abundant number, since it is smaller than the sum of its proper divisors (39069280544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31255424032 is a wasteful number, since it uses less digits than its factorization.

31255424032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139533160 (or 139533152 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 31255424032 its reverse (23042455213), we get a palindrome (54297879245).

The spelling of 31255424032 in words is "thirty-one billion, two hundred fifty-five million, four hundred twenty-four thousand, thirty-two".