123120320101331 has 4 divisors (see below), whose sum is σ = 140708937258672. Its totient is φ = 105531702943992.

The previous prime is 123120320101321. The next prime is 123120320101421. The reversal of 123120320101331 is 133101023021321.

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 123120320101331 - 2¹⁴ = 123120320084947 is a prime.

It is a super-2 number, since 2×123120320101331² (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 = 123120320101297 and 123120320101306.

It is not an unprimeable number, because it can be changed into a prime (123120320101301) 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, 8794308578660 + ... + 8794308578673.

It is an arithmetic number, because the mean of its divisors is an integer number (35177234314668).

Almost surely, 2^{123120320101331} is an apocalyptic number.

123120320101331 is a deficient number, since it is larger than the sum of its proper divisors (17588617157341).

123120320101331 is an equidigital number, since it uses as much as digits as its factorization.

123120320101331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17588617157340.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 123120320101331 its reverse (133101023021321), we get a palindrome (256221343122652).

The spelling of 123120320101331 in words is "one hundred twenty-three trillion, one hundred twenty billion, three hundred twenty million, one hundred one thousand, three hundred thirty-one".