312431227 has 2 divisors, whose sum is σ = 312431228. Its totient is φ = 312431226.

The previous prime is 312431221. The next prime is 312431233. The reversal of 312431227 is 722134213.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (312431221) and next prime (312431233).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312431227 is a prime.

It is a super-2 number, since 2×312431227² = 195226543209451058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (312431221) 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, 156215613 + 156215614.

It is an arithmetic number, because the mean of its divisors is an integer number (156215614).

Almost surely, 2^312431227 is an apocalyptic number.

312431227 is a deficient number, since it is larger than the sum of its proper divisors (1).

312431227 is an equidigital number, since it uses as much as digits as its factorization.

312431227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 25.

The square root of 312431227 is about 17675.7242284439. The cubic root of 312431227 is about 678.5546195251.

The spelling of 312431227 in words is "three hundred twelve million, four hundred thirty-one thousand, two hundred twenty-seven".