313640906 has 8 divisors (see below), whose sum is σ = 472534560. Its totient is φ = 156129388.

The previous prime is 313640849. The next prime is 313640911. The reversal of 313640906 is 609046313.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×313640906³ (a number of 26 digits) contains 333 as substring.

It is a Curzon 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, 344966 + ... + 345873.

It is an arithmetic number, because the mean of its divisors is an integer number (59066820).

Almost surely, 2^313640906 is an apocalyptic number.

313640906 is a deficient number, since it is larger than the sum of its proper divisors (158893654).

313640906 is a wasteful number, since it uses less digits than its factorization.

313640906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691068.

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

The square root of 313640906 is about 17709.9098247281. The cubic root of 313640906 is about 679.4292399230.

The spelling of 313640906 in words is "three hundred thirteen million, six hundred forty thousand, nine hundred six".