20323100131 has 4 divisors (see below), whose sum is σ = 21392737000. Its totient is φ = 19253463264.

The previous prime is 20323100123. The next prime is 20323100201. The reversal of 20323100131 is 13100132302.

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 20323100131 - 2³ = 20323100123 is a prime.

It is a super-2 number, since 2×20323100131² (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 (20323160131) 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, 534818406 + ... + 534818443.

It is an arithmetic number, because the mean of its divisors is an integer number (5348184250).

Almost surely, 2^20323100131 is an apocalyptic number.

20323100131 is a deficient number, since it is larger than the sum of its proper divisors (1069636869).

20323100131 is a wasteful number, since it uses less digits than its factorization.

20323100131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069636868.

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

Adding to 20323100131 its reverse (13100132302), we get a palindrome (33423232433).

The spelling of 20323100131 in words is "twenty billion, three hundred twenty-three million, one hundred thousand, one hundred thirty-one".