315211927 has 2 divisors, whose sum is σ = 315211928. Its totient is φ = 315211926.

The previous prime is 315211907. The next prime is 315211931. The reversal of 315211927 is 729112513.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 315211927 - 2¹¹ = 315209879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315211907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157605963 + 157605964.

It is an arithmetic number, because the mean of its divisors is an integer number (157605964).

Almost surely, 2^315211927 is an apocalyptic number.

315211927 is a deficient number, since it is larger than the sum of its proper divisors (1).

315211927 is an equidigital number, since it uses as much as digits as its factorization.

315211927 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 31.

The square root of 315211927 is about 17754.2087123026. The cubic root of 315211927 is about 680.5617668940.

The spelling of 315211927 in words is "three hundred fifteen million, two hundred eleven thousand, nine hundred twenty-seven".