31132133230 has 32 divisors (see below), whose sum is σ = 63790115328. Its totient is φ = 10828567200.

The previous prime is 31132133177. The next prime is 31132133233. The reversal of 31132133230 is 3233123113.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31132133233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6150066 + ... + 6155125.

It is an arithmetic number, because the mean of its divisors is an integer number (1993441104).

Almost surely, 2^31132133230 is an apocalyptic number.

31132133230 is an abundant number, since it is smaller than the sum of its proper divisors (32657982098).

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

31132133230 is a wasteful number, since it uses less digits than its factorization.

31132133230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12305232.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31132133230 its reverse (3233123113), we get a palindrome (34365256343).

The spelling of 31132133230 in words is "thirty-one billion, one hundred thirty-two million, one hundred thirty-three thousand, two hundred thirty".