312130519 has 2 divisors, whose sum is σ = 312130520. Its totient is φ = 312130518.

The previous prime is 312130487. The next prime is 312130549. The reversal of 312130519 is 915031213.

It is a strong prime.

It is an emirp because it is prime and its reverse (915031213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 312130519 - 2⁵ = 312130487 is a prime.

It is a super-2 number, since 2×312130519² = 194850921782418722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 312130493 and 312130502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312130549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156065259 + 156065260.

It is an arithmetic number, because the mean of its divisors is an integer number (156065260).

Almost surely, 2^312130519 is an apocalyptic number.

312130519 is a deficient number, since it is larger than the sum of its proper divisors (1).

312130519 is an equidigital number, since it uses as much as digits as its factorization.

312130519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 312130519 is about 17667.2159380022. The cubic root of 312130519 is about 678.3368518124.

The spelling of 312130519 in words is "three hundred twelve million, one hundred thirty thousand, five hundred nineteen".