31132320132 has 24 divisors (see below), whose sum is σ = 72672707296. Its totient is φ = 10373064768.

The previous prime is 31132320119. The next prime is 31132320139. The reversal of 31132320132 is 23102323113.

It is a junction number, because it is equal to n+sod(n) for n = 31132320099 and 31132320108.

It is not an unprimeable number, because it can be changed into a prime (31132320139) 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, 517198 + ... + 574245.

Almost surely, 2^31132320132 is an apocalyptic number.

It is an amenable number.

31132320132 is an abundant number, since it is smaller than the sum of its proper divisors (41540387164).

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

31132320132 is a wasteful number, since it uses less digits than its factorization.

31132320132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093827 (or 1093825 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 31132320132 its reverse (23102323113), we get a palindrome (54234643245).

The spelling of 31132320132 in words is "thirty-one billion, one hundred thirty-two million, three hundred twenty thousand, one hundred thirty-two".