123342931 has 2 divisors, whose sum is σ = 123342932. Its totient is φ = 123342930.

The previous prime is 123342907. The next prime is 123342959. The reversal of 123342931 is 139243321.

It is an a-pointer prime, because the next prime (123342959) can be obtained adding 123342931 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123342931 - 2⁹ = 123342419 is a prime.

It is a super-2 number, since 2×123342931² = 30426957255341522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123342931.

It is not a weakly prime, because it can be changed into another prime (123349931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61671465 + 61671466.

It is an arithmetic number, because the mean of its divisors is an integer number (61671466).

Almost surely, 2^123342931 is an apocalyptic number.

123342931 is a deficient number, since it is larger than the sum of its proper divisors (1).

123342931 is an equidigital number, since it uses as much as digits as its factorization.

123342931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 28.

The square root of 123342931 is about 11105.9862686751. The cubic root of 123342931 is about 497.7807390014.

The spelling of 123342931 in words is "one hundred twenty-three million, three hundred forty-two thousand, nine hundred thirty-one".