31102133132 has 24 divisors (see below), whose sum is σ = 62226351264. Its totient is φ = 13324753152.

The previous prime is 31102133081. The next prime is 31102133177. The reversal of 31102133132 is 23133120113.

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, 116333 + ... + 275204.

It is an arithmetic number, because the mean of its divisors is an integer number (2592764636).

Almost surely, 2^31102133132 is an apocalyptic number.

It is an amenable number.

31102133132 is an abundant number, since it is smaller than the sum of its proper divisors (31124218132).

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

31102133132 is a wasteful number, since it uses less digits than its factorization.

31102133132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394385 (or 394383 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 31102133132 its reverse (23133120113), we get a palindrome (54235253245).

The spelling of 31102133132 in words is "thirty-one billion, one hundred two million, one hundred thirty-three thousand, one hundred thirty-two".