20133131132 has 12 divisors (see below), whose sum is σ = 35581821576. Its totient is φ = 9966896400.

The previous prime is 20133131111. The next prime is 20133131143. The reversal of 20133131132 is 23113133102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24916838 + ... + 24917645.

It is an arithmetic number, because the mean of its divisors is an integer number (2965151798).

Almost surely, 2^20133131132 is an apocalyptic number.

It is an amenable number.

20133131132 is a deficient number, since it is larger than the sum of its proper divisors (15448690444).

20133131132 is a wasteful number, since it uses less digits than its factorization.

20133131132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49834588 (or 49834586 counting only the distinct ones).

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

Adding to 20133131132 its reverse (23113133102), we get a palindrome (43246264234).

The spelling of 20133131132 in words is "twenty billion, one hundred thirty-three million, one hundred thirty-one thousand, one hundred thirty-two".