123376431 has 4 divisors (see below), whose sum is σ = 164501912. Its totient is φ = 82250952.

The previous prime is 123376403. The next prime is 123376441. The reversal of 123376431 is 134673321.

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

It is not a de Polignac number, because 123376431 - 2⁵ = 123376399 is a prime.

It is a super-2 number, since 2×123376431² = 30443487452595522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123376441) 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, 20562736 + ... + 20562741.

It is an arithmetic number, because the mean of its divisors is an integer number (41125478).

Almost surely, 2^123376431 is an apocalyptic number.

123376431 is a deficient number, since it is larger than the sum of its proper divisors (41125481).

123376431 is an equidigital number, since it uses as much as digits as its factorization.

123376431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41125480.

The product of its digits is 9072, while the sum is 30.

The square root of 123376431 is about 11107.4943619162. The cubic root of 123376431 is about 497.8258007523.

The spelling of 123376431 in words is "one hundred twenty-three million, three hundred seventy-six thousand, four hundred thirty-one".