312399127 has 2 divisors, whose sum is σ = 312399128. Its totient is φ = 312399126.

The previous prime is 312399097. The next prime is 312399149. The reversal of 312399127 is 721993213.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312399127 - 2¹⁵ = 312366359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312399827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156199563 + 156199564.

It is an arithmetic number, because the mean of its divisors is an integer number (156199564).

Almost surely, 2^312399127 is an apocalyptic number.

312399127 is a deficient number, since it is larger than the sum of its proper divisors (1).

312399127 is an equidigital number, since it uses as much as digits as its factorization.

312399127 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 37.

The square root of 312399127 is about 17674.8161800908. The cubic root of 312399127 is about 678.5313799047.

The spelling of 312399127 in words is "three hundred twelve million, three hundred ninety-nine thousand, one hundred twenty-seven".