31020123230 has 32 divisors (see below), whose sum is σ = 58274463744. Its totient is φ = 11866413856.

The previous prime is 31020123191. The next prime is 31020123241. The reversal of 31020123230 is 3232102013.

It is a junction number, because it is equal to n+sod(n) for n = 31020123199 and 31020123208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1915427 + ... + 1931553.

It is an arithmetic number, because the mean of its divisors is an integer number (1821076992).

Almost surely, 2^31020123230 is an apocalyptic number.

31020123230 is a deficient number, since it is larger than the sum of its proper divisors (27254340514).

31020123230 is a wasteful number, since it uses less digits than its factorization.

31020123230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24520.

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

Adding to 31020123230 its reverse (3232102013), we get a palindrome (34252225243).

The spelling of 31020123230 in words is "thirty-one billion, twenty million, one hundred twenty-three thousand, two hundred thirty".