311972327 has 2 divisors, whose sum is σ = 311972328. Its totient is φ = 311972326.

The previous prime is 311972291. The next prime is 311972329. The reversal of 311972327 is 723279113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 311972327 - 2⁶ = 311972263 is a prime.

Together with 311972329, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311972329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155986163 + 155986164.

It is an arithmetic number, because the mean of its divisors is an integer number (155986164).

Almost surely, 2^311972327 is an apocalyptic number.

311972327 is a deficient number, since it is larger than the sum of its proper divisors (1).

311972327 is an equidigital number, since it uses as much as digits as its factorization.

311972327 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15876, while the sum is 35.

The square root of 311972327 is about 17662.7383777261. The cubic root of 311972327 is about 678.2222356608. Note that the first 4 decimals are identical.

The spelling of 311972327 in words is "three hundred eleven million, nine hundred seventy-two thousand, three hundred twenty-seven".