312621053 has 2 divisors, whose sum is σ = 312621054. Its totient is φ = 312621052.

The previous prime is 312620989. The next prime is 312621059. The reversal of 312621053 is 350126213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 310711129 + 1909924 = 17627^2 + 1382^2 .

It is a cyclic number.

It is not a de Polignac number, because 312621053 - 2⁶ = 312620989 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312621059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156310526 + 156310527.

It is an arithmetic number, because the mean of its divisors is an integer number (156310527).

Almost surely, 2^312621053 is an apocalyptic number.

It is an amenable number.

312621053 is a deficient number, since it is larger than the sum of its proper divisors (1).

312621053 is an equidigital number, since it uses as much as digits as its factorization.

312621053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 312621053 is about 17681.0930940369. The cubic root of 312621053 is about 678.6920164091.

Adding to 312621053 its reverse (350126213), we get a palindrome (662747266).

The spelling of 312621053 in words is "three hundred twelve million, six hundred twenty-one thousand, fifty-three".