312947943 has 32 divisors (see below), whose sum is σ = 523599360. Its totient is φ = 161516160.

The previous prime is 312947933. The next prime is 312948001. The reversal of 312947943 is 349749213.

It is not a de Polignac number, because 312947943 - 2⁴ = 312947927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 312947895 and 312947904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312947923) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31953 + ... + 40581.

It is an arithmetic number, because the mean of its divisors is an integer number (16362480).

Almost surely, 2^312947943 is an apocalyptic number.

312947943 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

312947943 is a deficient number, since it is larger than the sum of its proper divisors (210651417).

312947943 is a wasteful number, since it uses less digits than its factorization.

312947943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8807.

The product of its digits is 163296, while the sum is 42.

The square root of 312947943 is about 17690.3347339727. The cubic root of 312947943 is about 678.9284905131.

The spelling of 312947943 in words is "three hundred twelve million, nine hundred forty-seven thousand, nine hundred forty-three".