20231102131 has 4 divisors (see below), whose sum is σ = 21295897000. Its totient is φ = 19166307264.

The previous prime is 20231102077. The next prime is 20231102153. The reversal of 20231102131 is 13120113202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20231102131 - 2¹¹ = 20231100083 is a prime.

It is a super-2 number, since 2×20231102131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20231102431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 532397406 + ... + 532397443.

It is an arithmetic number, because the mean of its divisors is an integer number (5323974250).

Almost surely, 2^20231102131 is an apocalyptic number.

20231102131 is a deficient number, since it is larger than the sum of its proper divisors (1064794869).

20231102131 is a wasteful number, since it uses less digits than its factorization.

20231102131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064794868.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20231102131 its reverse (13120113202), we get a palindrome (33351215333).

The spelling of 20231102131 in words is "twenty billion, two hundred thirty-one million, one hundred two thousand, one hundred thirty-one".