123431396 has 12 divisors (see below), whose sum is σ = 235641840. Its totient is φ = 56105160.

The previous prime is 123431381. The next prime is 123431401. The reversal of 123431396 is 693134321.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1402586 + ... + 1402673.

It is an arithmetic number, because the mean of its divisors is an integer number (19636820).

Almost surely, 2^123431396 is an apocalyptic number.

It is an amenable number.

123431396 is a deficient number, since it is larger than the sum of its proper divisors (112210444).

123431396 is a wasteful number, since it uses less digits than its factorization.

123431396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2805274 (or 2805272 counting only the distinct ones).

The product of its digits is 11664, while the sum is 32.

The square root of 123431396 is about 11109.9683167865. The cubic root of 123431396 is about 497.8997179839.

The spelling of 123431396 in words is "one hundred twenty-three million, four hundred thirty-one thousand, three hundred ninety-six".