312402333230021 has 2 divisors, whose sum is σ = 312402333230022. Its totient is φ = 312402333230020.

The previous prime is 312402333230017. The next prime is 312402333230033. The reversal of 312402333230021 is 120032333204213.

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., 216289525036225 + 96112808193796 = 14706785^2 + 9803714^2 .

It is a cyclic number.

It is not a de Polignac number, because 312402333230021 - 2² = 312402333230017 is a prime.

It is a super-2 number, since 2×312402333230021² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312402333230521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156201166615010 + 156201166615011.

It is an arithmetic number, because the mean of its divisors is an integer number (156201166615011).

Almost surely, 2^{312402333230021} is an apocalyptic number.

It is an amenable number.

312402333230021 is a deficient number, since it is larger than the sum of its proper divisors (1).

312402333230021 is an equidigital number, since it uses as much as digits as its factorization.

312402333230021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 312402333230021 its reverse (120032333204213), we get a palindrome (432434666434234).

The spelling of 312402333230021 in words is "three hundred twelve trillion, four hundred two billion, three hundred thirty-three million, two hundred thirty thousand, twenty-one".