123310002020131 has 4 divisors (see below), whose sum is σ = 123322601396632. Its totient is φ = 123297402643632.

The previous prime is 123310002020113. The next prime is 123310002020167. The reversal of 123310002020131 is 131020200013321.

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 123310002020131 - 2⁷ = 123310002020003 is a prime.

It is a super-2 number, since 2×123310002020131² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123310002020099 and 123310002020108.

It is not an unprimeable number, because it can be changed into a prime (123310002020171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6299673570 + ... + 6299693143.

It is an arithmetic number, because the mean of its divisors is an integer number (30830650349158).

Almost surely, 2^{123310002020131} is an apocalyptic number.

123310002020131 is a deficient number, since it is larger than the sum of its proper divisors (12599376501).

123310002020131 is an equidigital number, since it uses as much as digits as its factorization.

123310002020131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12599376500.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 123310002020131 its reverse (131020200013321), we get a palindrome (254330202033452).

The spelling of 123310002020131 in words is "one hundred twenty-three trillion, three hundred ten billion, two million, twenty thousand, one hundred thirty-one".