31234420032 has 28 divisors (see below), whose sum is σ = 82641070176. Its totient is φ = 10411473280.

The previous prime is 31234420027. The next prime is 31234420051. The reversal of 31234420032 is 23002443213.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 31234419984 and 31234420011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81339444 + ... + 81339827.

It is an arithmetic number, because the mean of its divisors is an integer number (2951466792).

Almost surely, 2^31234420032 is an apocalyptic number.

31234420032 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31234420032 is an abundant number, since it is smaller than the sum of its proper divisors (51406650144).

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

31234420032 is a wasteful number, since it uses less digits than its factorization.

31234420032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162679286 (or 162679276 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 31234420032 its reverse (23002443213), we get a palindrome (54236863245).

The spelling of 31234420032 in words is "thirty-one billion, two hundred thirty-four million, four hundred twenty thousand, thirty-two".