123100131312011 has 4 divisors (see below), whose sum is σ = 140685864356592. Its totient is φ = 105514398267432.

The previous prime is 123100131311999. The next prime is 123100131312073. The reversal of 123100131312011 is 110213131001321.

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

It is not a de Polignac number, because 123100131312011 - 2³⁴ = 123082951442827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123100131312091) 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, 8792866522280 + ... + 8792866522293.

It is an arithmetic number, because the mean of its divisors is an integer number (35171466089148).

Almost surely, 2^{123100131312011} is an apocalyptic number.

123100131312011 is a deficient number, since it is larger than the sum of its proper divisors (17585733044581).

123100131312011 is an equidigital number, since it uses as much as digits as its factorization.

123100131312011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17585733044580.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 123100131312011 its reverse (110213131001321), we get a palindrome (233313262313332).

The spelling of 123100131312011 in words is "one hundred twenty-three trillion, one hundred billion, one hundred thirty-one million, three hundred twelve thousand, eleven".