312560641 has 2 divisors, whose sum is σ = 312560642. Its totient is φ = 312560640.

The previous prime is 312560627. The next prime is 312560683. The reversal of 312560641 is 146065213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 284428225 + 28132416 = 16865^2 + 5304^2 .

It is a cyclic number.

It is not a de Polignac number, because 312560641 - 2⁵ = 312560609 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (312500641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156280320 + 156280321.

It is an arithmetic number, because the mean of its divisors is an integer number (156280321).

Almost surely, 2^312560641 is an apocalyptic number.

It is an amenable number.

312560641 is a deficient number, since it is larger than the sum of its proper divisors (1).

312560641 is an equidigital number, since it uses as much as digits as its factorization.

312560641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 312560641 is about 17679.3846329560. The cubic root of 312560641 is about 678.6482959761.

The spelling of 312560641 in words is "three hundred twelve million, five hundred sixty thousand, six hundred forty-one".