20000231102131 has 4 divisors (see below), whose sum is σ = 22857406973872. Its totient is φ = 17143055230392.

The previous prime is 20000231102119. The next prime is 20000231102141. The reversal of 20000231102131 is 13120113200002.

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

It is not a de Polignac number, because 20000231102131 - 2³⁷ = 19862792148659 is a prime.

It is a super-2 number, since 2×20000231102131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20000231102141) 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, 1428587935860 + ... + 1428587935873.

It is an arithmetic number, because the mean of its divisors is an integer number (5714351743468).

Almost surely, 2^{20000231102131} is an apocalyptic number.

20000231102131 is a deficient number, since it is larger than the sum of its proper divisors (2857175871741).

20000231102131 is an equidigital number, since it uses as much as digits as its factorization.

20000231102131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2857175871740.

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

Adding to 20000231102131 its reverse (13120113200002), we get a palindrome (33120344302133).

The spelling of 20000231102131 in words is "twenty trillion, two hundred thirty-one million, one hundred two thousand, one hundred thirty-one".