20312232132 has 48 divisors (see below), whose sum is σ = 48193790400. Its totient is φ = 6656760960.

The previous prime is 20312232119. The next prime is 20312232163. The reversal of 20312232132 is 23123221302.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20312232099 and 20312232108.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2124619 + ... + 2134157.

It is an arithmetic number, because the mean of its divisors is an integer number (1004037300).

Almost surely, 2^20312232132 is an apocalyptic number.

It is an amenable number.

20312232132 is an abundant number, since it is smaller than the sum of its proper divisors (27881558268).

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

20312232132 is a wasteful number, since it uses less digits than its factorization.

20312232132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12516 (or 12514 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20312232132 its reverse (23123221302), we get a palindrome (43435453434).

The spelling of 20312232132 in words is "twenty billion, three hundred twelve million, two hundred thirty-two thousand, one hundred thirty-two".