312465487 has 2 divisors, whose sum is σ = 312465488. Its totient is φ = 312465486.

The previous prime is 312465409. The next prime is 312465499. The reversal of 312465487 is 784564213.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312465487 is a prime.

It is a super-2 number, since 2×312465487² = 195269361132294338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312460487) 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, 156232743 + 156232744.

It is an arithmetic number, because the mean of its divisors is an integer number (156232744).

Almost surely, 2^312465487 is an apocalyptic number.

312465487 is a deficient number, since it is larger than the sum of its proper divisors (1).

312465487 is an equidigital number, since it uses as much as digits as its factorization.

312465487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 40.

The square root of 312465487 is about 17676.6933276561. The cubic root of 312465487 is about 678.5794211769.

The spelling of 312465487 in words is "three hundred twelve million, four hundred sixty-five thousand, four hundred eighty-seven".