312056407 has 4 divisors (see below), whose sum is σ = 336060760. Its totient is φ = 288052056.

The previous prime is 312056351. The next prime is 312056411. The reversal of 312056407 is 704650213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 704650213 = 6343 ⋅111091.

It is a cyclic number.

It is not a de Polignac number, because 312056407 - 2¹⁵ = 312023639 is a prime.

It is a super-2 number, since 2×312056407² = 194758402299499298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312056417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12002157 + ... + 12002182.

It is an arithmetic number, because the mean of its divisors is an integer number (84015190).

Almost surely, 2^312056407 is an apocalyptic number.

312056407 is a deficient number, since it is larger than the sum of its proper divisors (24004353).

312056407 is a wasteful number, since it uses less digits than its factorization.

312056407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24004352.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 312056407 is about 17665.1183692609. The cubic root of 312056407 is about 678.2831596578.

The spelling of 312056407 in words is "three hundred twelve million, fifty-six thousand, four hundred seven".