20013012331 has 16 divisors (see below), whose sum is σ = 22158864000. Its totient is φ = 17959068288.

The previous prime is 20013012311. The next prime is 20013012347. The reversal of 20013012331 is 13321031002.

It is a cyclic number.

It is not a de Polignac number, because 20013012331 - 2⁷ = 20013012203 is a prime.

It is a super-2 number, since 2×20013012331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20013012311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18876 + ... + 200953.

It is an arithmetic number, because the mean of its divisors is an integer number (1384929000).

Almost surely, 2^20013012331 is an apocalyptic number.

20013012331 is a deficient number, since it is larger than the sum of its proper divisors (2145851669).

20013012331 is a wasteful number, since it uses less digits than its factorization.

20013012331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220038.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20013012331 its reverse (13321031002), we get a palindrome (33334043333).

The spelling of 20013012331 in words is "twenty billion, thirteen million, twelve thousand, three hundred thirty-one".