312675997 has 4 divisors (see below), whose sum is σ = 312742396. Its totient is φ = 312609600.

The previous prime is 312675973. The next prime is 312676031. The reversal of 312675997 is 799576213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 799576213 = 607 ⋅1317259.

It can be written as a sum of positive squares in 2 ways, for example, as 24661156 + 288014841 = 4966^2 + 16971^2 .

It is a cyclic number.

It is not a de Polignac number, because 312675997 - 2¹⁹ = 312151709 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 312675997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312673997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25548 + ... + 35749.

It is an arithmetic number, because the mean of its divisors is an integer number (78185599).

Almost surely, 2^312675997 is an apocalyptic number.

It is an amenable number.

312675997 is a deficient number, since it is larger than the sum of its proper divisors (66399).

312675997 is an equidigital number, since it uses as much as digits as its factorization.

312675997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66398.

The product of its digits is 714420, while the sum is 49.

The square root of 312675997 is about 17682.6467758647. The cubic root of 312675997 is about 678.7317747357.

The spelling of 312675997 in words is "three hundred twelve million, six hundred seventy-five thousand, nine hundred ninety-seven".