123023010131 has 4 divisors (see below), whose sum is σ = 140597725872. Its totient is φ = 105448294392.

The previous prime is 123023010083. The next prime is 123023010133. The reversal of 123023010131 is 131010320321.

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

It is a de Polignac number, because none of the positive numbers 2^k-123023010131 is a prime.

It is a super-2 number, since 2×123023010131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123023010133) 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 3 ways as a sum of consecutive naturals, for example, 8787357860 + ... + 8787357873.

It is an arithmetic number, because the mean of its divisors is an integer number (35149431468).

Almost surely, 2^123023010131 is an apocalyptic number.

123023010131 is a deficient number, since it is larger than the sum of its proper divisors (17574715741).

123023010131 is an equidigital number, since it uses as much as digits as its factorization.

123023010131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17574715740.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 123023010131 its reverse (131010320321), we get a palindrome (254033330452).

The spelling of 123023010131 in words is "one hundred twenty-three billion, twenty-three million, ten thousand, one hundred thirty-one".