312130487 has 2 divisors, whose sum is σ = 312130488. Its totient is φ = 312130486.

The previous prime is 312130459. The next prime is 312130519. The reversal of 312130487 is 784031213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312130487 - 2²² = 307936183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312130087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156065243 + 156065244.

It is an arithmetic number, because the mean of its divisors is an integer number (156065244).

Almost surely, 2^312130487 is an apocalyptic number.

312130487 is a deficient number, since it is larger than the sum of its proper divisors (1).

312130487 is an equidigital number, since it uses as much as digits as its factorization.

312130487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 312130487 is about 17667.2150323700. The cubic root of 312130487 is about 678.3368286311.

The spelling of 312130487 in words is "three hundred twelve million, one hundred thirty thousand, four hundred eighty-seven".