20310131132 has 36 divisors (see below), whose sum is σ = 38573972640. Its totient is φ = 9324541440.

The previous prime is 20310131119. The next prime is 20310131137. The reversal of 20310131132 is 23113101302.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 20310131132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20310131137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25469 + ... + 203147.

It is an arithmetic number, because the mean of its divisors is an integer number (1071499240).

Almost surely, 2^20310131132 is an apocalyptic number.

It is an amenable number.

20310131132 is a deficient number, since it is larger than the sum of its proper divisors (18263841508).

20310131132 is a wasteful number, since it uses less digits than its factorization.

20310131132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177782 (or 177739 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 20310131132 its reverse (23113101302), we get a palindrome (43423232434).

The spelling of 20310131132 in words is "twenty billion, three hundred ten million, one hundred thirty-one thousand, one hundred thirty-two".