312460261 has 2 divisors, whose sum is σ = 312460262. Its totient is φ = 312460260.

The previous prime is 312460217. The next prime is 312460271. The reversal of 312460261 is 162064213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 312228900 + 231361 = 17670^2 + 481^2 .

It is a cyclic number.

It is not a de Polignac number, because 312460261 - 2⁷ = 312460133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312460271) 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, 156230130 + 156230131.

It is an arithmetic number, because the mean of its divisors is an integer number (156230131).

Almost surely, 2^312460261 is an apocalyptic number.

It is an amenable number.

312460261 is a deficient number, since it is larger than the sum of its proper divisors (1).

312460261 is an equidigital number, since it uses as much as digits as its factorization.

312460261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 312460261 is about 17676.5455052734. The cubic root of 312460261 is about 678.5756380649.

The spelling of 312460261 in words is "three hundred twelve million, four hundred sixty thousand, two hundred sixty-one".