123407312 has 20 divisors (see below), whose sum is σ = 273259296. Its totient is φ = 52888800.

The previous prime is 123407279. The next prime is 123407329. The reversal of 123407312 is 213704321.

It is a congruent number.

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, 550814 + ... + 551037.

Almost surely, 2^123407312 is an apocalyptic number.

It is an amenable number.

123407312 is an abundant number, since it is smaller than the sum of its proper divisors (149851984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123407312 is a wasteful number, since it uses less digits than its factorization.

123407312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101866 (or 1101860 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 123407312 is about 11108.8843724291. The cubic root of 123407312 is about 497.8673323910.

The spelling of 123407312 in words is "one hundred twenty-three million, four hundred seven thousand, three hundred twelve".