31211214132 has 24 divisors (see below), whose sum is σ = 83229904576. Its totient is φ = 8917489728.

The previous prime is 31211214119. The next prime is 31211214163. The reversal of 31211214132 is 23141211213.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 31211214099 and 31211214108.

It is a congruent number.

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, 185780953 + ... + 185781120.

Almost surely, 2^31211214132 is an apocalyptic number.

It is an amenable number.

31211214132 is an abundant number, since it is smaller than the sum of its proper divisors (52018690444).

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

31211214132 is a wasteful number, since it uses less digits than its factorization.

31211214132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371562087 (or 371562085 counting only the distinct ones).

The product of its digits is 288, while the sum is 21.

Adding to 31211214132 its reverse (23141211213), we get a palindrome (54352425345).

The spelling of 31211214132 in words is "thirty-one billion, two hundred eleven million, two hundred fourteen thousand, one hundred thirty-two".