31330130232 has 32 divisors (see below), whose sum is σ = 78358698000. Its totient is φ = 10438927104.

The previous prime is 31330130231. The next prime is 31330130281. The reversal of 31330130232 is 23203103313.

It is a junction number, because it is equal to n+sod(n) for n = 31330130199 and 31330130208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31330130231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220357 + ... + 333492.

Almost surely, 2^31330130232 is an apocalyptic number.

It is an amenable number.

31330130232 is an abundant number, since it is smaller than the sum of its proper divisors (47028567768).

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

31330130232 is a wasteful number, since it uses less digits than its factorization.

31330130232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556215 (or 556211 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 31330130232 its reverse (23203103313), we get a palindrome (54533233545).

The spelling of 31330130232 in words is "thirty-one billion, three hundred thirty million, one hundred thirty thousand, two hundred thirty-two".