312032997 has 6 divisors (see below), whose sum is σ = 450714342. Its totient is φ = 208021992.

The previous prime is 312032989. The next prime is 312033013. The reversal of 312032997 is 799230213.

It can be written as a sum of positive squares in only one way, i.e., 191933316 + 120099681 = 13854^2 + 10959^2 .

It is not a de Polignac number, because 312032997 - 2³ = 312032989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312032197) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17335158 + ... + 17335175.

It is an arithmetic number, because the mean of its divisors is an integer number (75119057).

Almost surely, 2^312032997 is an apocalyptic number.

It is an amenable number.

312032997 is a deficient number, since it is larger than the sum of its proper divisors (138681345).

312032997 is a wasteful number, since it uses less digits than its factorization.

312032997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34670339 (or 34670336 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 312032997 is about 17664.4557515934. The cubic root of 312032997 is about 678.2661979745.

The spelling of 312032997 in words is "three hundred twelve million, thirty-two thousand, nine hundred ninety-seven".