323400856 has 8 divisors (see below), whose sum is σ = 606376620. Its totient is φ = 161700424.

The previous prime is 323400839. The next prime is 323400871. The reversal of 323400856 is 658004323.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×323400856² = 209176227323065472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20212546 + ... + 20212561.

Almost surely, 2^323400856 is an apocalyptic number.

It is an amenable number.

323400856 is a deficient number, since it is larger than the sum of its proper divisors (282975764).

323400856 is a wasteful number, since it uses less digits than its factorization.

323400856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40425113 (or 40425109 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 323400856 is about 17983.3494099403. The cubic root of 323400856 is about 686.4049209244.

The spelling of 323400856 in words is "three hundred twenty-three million, four hundred thousand, eight hundred fifty-six".