31030120232 has 16 divisors (see below), whose sum is σ = 58183448640. Its totient is φ = 15514533936.

The previous prime is 31030120223. The next prime is 31030120267. The reversal of 31030120232 is 23202103013.

It is a super-2 number, since 2×31030120232² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31030120232.

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, 313523 + ... + 400445.

It is an arithmetic number, because the mean of its divisors is an integer number (3636465540).

Almost surely, 2^31030120232 is an apocalyptic number.

It is an amenable number.

31030120232 is a deficient number, since it is larger than the sum of its proper divisors (27153328408).

31030120232 is a wasteful number, since it uses less digits than its factorization.

31030120232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131552 (or 131548 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 31030120232 its reverse (23202103013), we get a palindrome (54232223245).

The spelling of 31030120232 in words is "thirty-one billion, thirty million, one hundred twenty thousand, two hundred thirty-two".