312379778 has 8 divisors (see below), whose sum is σ = 479466768. Its totient is φ = 152557524.

The previous prime is 312379763. The next prime is 312379783. The reversal of 312379778 is 877973213.

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

It is a super-2 number, since 2×312379778² = 195162251406658568, which contains 22 as substring.

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, 1816076 + ... + 1816247.

It is an arithmetic number, because the mean of its divisors is an integer number (59933346).

Almost surely, 2^312379778 is an apocalyptic number.

312379778 is a deficient number, since it is larger than the sum of its proper divisors (167086990).

312379778 is a wasteful number, since it uses less digits than its factorization.

312379778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3632368.

The product of its digits is 444528, while the sum is 47.

The square root of 312379778 is about 17674.2688109013. The cubic root of 312379778 is about 678.5173709297.

The spelling of 312379778 in words is "three hundred twelve million, three hundred seventy-nine thousand, seven hundred seventy-eight".