20311020132 has 48 divisors (see below), whose sum is σ = 51148840512. Its totient is φ = 6235966080.

The previous prime is 20311020127. The next prime is 20311020137. The reversal of 20311020132 is 23102011302.

It is an interprime number because it is at equal distance from previous prime (20311020127) and next prime (20311020137).

It is not an unprimeable number, because it can be changed into a prime (20311020137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69298 + ... + 213129.

It is an arithmetic number, because the mean of its divisors is an integer number (1065600844).

Almost surely, 2^20311020132 is an apocalyptic number.

It is an amenable number.

20311020132 is an abundant number, since it is smaller than the sum of its proper divisors (30837820380).

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

20311020132 is a wasteful number, since it uses less digits than its factorization.

20311020132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282908 (or 282906 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20311020132 its reverse (23102011302), we get a palindrome (43413031434).

The spelling of 20311020132 in words is "twenty billion, three hundred eleven million, twenty thousand, one hundred thirty-two".