31130231132 has 48 divisors (see below), whose sum is σ = 73145167872. Its totient is φ = 11195686080.

The previous prime is 31130231131. The next prime is 31130231177. The reversal of 31130231132 is 23113203113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31130231131) 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, 3883388 + ... + 3891395.

It is an arithmetic number, because the mean of its divisors is an integer number (1523857664).

Almost surely, 2^31130231132 is an apocalyptic number.

It is an amenable number.

31130231132 is an abundant number, since it is smaller than the sum of its proper divisors (42014936740).

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

31130231132 is a wasteful number, since it uses less digits than its factorization.

31130231132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7774818 (or 7774816 counting only the distinct ones).

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

Adding to 31130231132 its reverse (23113203113), we get a palindrome (54243434245).

It can be divided in two parts, 31130 and 231132, that added together give a palindrome (262262).

The spelling of 31130231132 in words is "thirty-one billion, one hundred thirty million, two hundred thirty-one thousand, one hundred thirty-two".