20311120100 has 36 divisors (see below), whose sum is σ = 44269343664. Its totient is φ = 8088648480.

The previous prime is 20311120091. The next prime is 20311120111. The reversal of 20311120100 is 102111302.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 424682 + ... + 470081.

Almost surely, 2^20311120100 is an apocalyptic number.

20311120100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20311120100 is an abundant number, since it is smaller than the sum of its proper divisors (23958223564).

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

20311120100 is a wasteful number, since it uses less digits than its factorization.

20311120100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895004 (or 894997 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 20311120100 its reverse (102111302), we get a palindrome (20413231402).

The spelling of 20311120100 in words is "twenty billion, three hundred eleven million, one hundred twenty thousand, one hundred".