123202310131 has 4 divisors (see below), whose sum is σ = 123212032200. Its totient is φ = 123192588064.

The previous prime is 123202310123. The next prime is 123202310159. The reversal of 123202310131 is 131013202321.

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 123202310131 - 2³ = 123202310123 is a prime.

It is a super-2 number, since 2×123202310131² (a number of 23 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 = 123202310099 and 123202310108.

It is not an unprimeable number, because it can be changed into a prime (123202310431) 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, 4842001 + ... + 4867378.

It is an arithmetic number, because the mean of its divisors is an integer number (30803008050).

Almost surely, 2^123202310131 is an apocalyptic number.

123202310131 is a deficient number, since it is larger than the sum of its proper divisors (9722069).

123202310131 is an equidigital number, since it uses as much as digits as its factorization.

123202310131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9722068.

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

Adding to 123202310131 its reverse (131013202321), we get a palindrome (254215512452).

The spelling of 123202310131 in words is "one hundred twenty-three billion, two hundred two million, three hundred ten thousand, one hundred thirty-one".