20100131120 has 40 divisors (see below), whose sum is σ = 46756349664. Its totient is φ = 8036001792.

The previous prime is 20100131071. The next prime is 20100131131. The reversal of 20100131120 is 2113100102.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99077 + ... + 223643.

Almost surely, 2^20100131120 is an apocalyptic number.

20100131120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20100131120 is an abundant number, since it is smaller than the sum of its proper divisors (26656218544).

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

20100131120 is a wasteful number, since it uses less digits than its factorization.

20100131120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126597 (or 126591 counting only the distinct ones).

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

Adding to 20100131120 its reverse (2113100102), we get a palindrome (22213231222).

The spelling of 20100131120 in words is "twenty billion, one hundred million, one hundred thirty-one thousand, one hundred twenty".