312661906 has 8 divisors (see below), whose sum is σ = 469257264. Its totient is φ = 156242820.

The previous prime is 312661879. The next prime is 312661927. The reversal of 312661906 is 609166213.

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

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, 39540 + ... + 46783.

It is an arithmetic number, because the mean of its divisors is an integer number (58657158).

Almost surely, 2^312661906 is an apocalyptic number.

312661906 is a deficient number, since it is larger than the sum of its proper divisors (156595358).

312661906 is a wasteful number, since it uses less digits than its factorization.

312661906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88136.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 312661906 is about 17682.2483298929. The cubic root of 312661906 is about 678.7215787147.

The spelling of 312661906 in words is "three hundred twelve million, six hundred sixty-one thousand, nine hundred six".