312901019 has 2 divisors, whose sum is σ = 312901020. Its totient is φ = 312901018.

The previous prime is 312901009. The next prime is 312901021. The reversal of 312901019 is 910109213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312901019 - 2⁴ = 312901003 is a prime.

It is a super-2 number, since 2×312901019² = 195814095382476722, which contains 22 as substring.

Together with 312901021, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (312901009) 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, 156450509 + 156450510.

It is an arithmetic number, because the mean of its divisors is an integer number (156450510).

Almost surely, 2^312901019 is an apocalyptic number.

312901019 is a deficient number, since it is larger than the sum of its proper divisors (1).

312901019 is an equidigital number, since it uses as much as digits as its factorization.

312901019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 312901019 is about 17689.0084233119. The cubic root of 312901019 is about 678.8945555476.

The spelling of 312901019 in words is "three hundred twelve million, nine hundred one thousand, nineteen".