312010997 has 2 divisors, whose sum is σ = 312010998. Its totient is φ = 312010996.

The previous prime is 312010987. The next prime is 312011009. The reversal of 312010997 is 799010213.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 253733041 + 58277956 = 15929^2 + 7634^2 .

It is a cyclic number.

It is not a de Polignac number, because 312010997 - 2⁴ = 312010981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312010927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156005498 + 156005499.

It is an arithmetic number, because the mean of its divisors is an integer number (156005499).

Almost surely, 2^312010997 is an apocalyptic number.

It is an amenable number.

312010997 is a deficient number, since it is larger than the sum of its proper divisors (1).

312010997 is an equidigital number, since it uses as much as digits as its factorization.

312010997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 312010997 is about 17663.8330211763. The cubic root of 312010997 is about 678.2502571315.

The spelling of 312010997 in words is "three hundred twelve million, ten thousand, nine hundred ninety-seven".