123112143011399 has 4 divisors (see below), whose sum is σ = 123127654187664. Its totient is φ = 123096631835136.

The previous prime is 123112143011369. The next prime is 123112143011413. The reversal of 123112143011399 is 993110341211321.

It is a happy number.

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 123112143011399 - 2³⁶ = 123043423534663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123112143011369) 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, 7755576227 + ... + 7755592100.

It is an arithmetic number, because the mean of its divisors is an integer number (30781913546916).

Almost surely, 2^{123112143011399} is an apocalyptic number.

123112143011399 is a deficient number, since it is larger than the sum of its proper divisors (15511176265).

123112143011399 is an equidigital number, since it uses as much as digits as its factorization.

123112143011399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15511176264.

The product of its (nonzero) digits is 34992, while the sum is 41.

The spelling of 123112143011399 in words is "one hundred twenty-three trillion, one hundred twelve billion, one hundred forty-three million, eleven thousand, three hundred ninety-nine".