812312456 has 32 divisors (see below), whose sum is σ = 1543955040. Its totient is φ = 400629888.

The previous prime is 812312401. The next prime is 812312477. The reversal of 812312456 is 654213218.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176375 + ... + 180921.

It is an arithmetic number, because the mean of its divisors is an integer number (48248595).

Almost surely, 2^812312456 is an apocalyptic number.

It is an amenable number.

812312456 is a deficient number, since it is larger than the sum of its proper divisors (731642584).

812312456 is a wasteful number, since it uses less digits than its factorization.

812312456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4853 (or 4849 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 812312456 is about 28501.0956982359. The cubic root of 812312456 is about 933.0559877747.

The spelling of 812312456 in words is "eight hundred twelve million, three hundred twelve thousand, four hundred fifty-six".