312472117 has 2 divisors, whose sum is σ = 312472118. Its totient is φ = 312472116.

The previous prime is 312472093. The next prime is 312472133. The reversal of 312472117 is 711274213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 230007556 + 82464561 = 15166^2 + 9081^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312472117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312472217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156236058 + 156236059.

It is an arithmetic number, because the mean of its divisors is an integer number (156236059).

Almost surely, 2^312472117 is an apocalyptic number.

It is an amenable number.

312472117 is a deficient number, since it is larger than the sum of its proper divisors (1).

312472117 is an equidigital number, since it uses as much as digits as its factorization.

312472117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2352, while the sum is 28.

The square root of 312472117 is about 17676.8808617358. The cubic root of 312472117 is about 678.5842205867.

The spelling of 312472117 in words is "three hundred twelve million, four hundred seventy-two thousand, one hundred seventeen".