31020123232 has 48 divisors (see below), whose sum is σ = 71112196512. Its totient is φ = 13043496960.

The previous prime is 31020123191. The next prime is 31020123241. The reversal of 31020123232 is 23232102013.

It is a super-2 number, since 2×31020123232² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1294569 + ... + 1318312.

It is an arithmetic number, because the mean of its divisors is an integer number (1481504094).

Almost surely, 2^31020123232 is an apocalyptic number.

31020123232 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31020123232 is an abundant number, since it is smaller than the sum of its proper divisors (40092073280).

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

31020123232 is a wasteful number, since it uses less digits than its factorization.

31020123232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2612951 (or 2612943 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 31020123232 its reverse (23232102013), we get a palindrome (54252225245).

The spelling of 31020123232 in words is "thirty-one billion, twenty million, one hundred twenty-three thousand, two hundred thirty-two".