311052397 has 2 divisors, whose sum is σ = 311052398. Its totient is φ = 311052396.

The previous prime is 311052353. The next prime is 311052403. The reversal of 311052397 is 793250113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 230250276 + 80802121 = 15174^2 + 8989^2 .

It is a cyclic number.

It is not a de Polignac number, because 311052397 - 2¹⁹ = 310528109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311052997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155526198 + 155526199.

It is an arithmetic number, because the mean of its divisors is an integer number (155526199).

Almost surely, 2^311052397 is an apocalyptic number.

It is an amenable number.

311052397 is a deficient number, since it is larger than the sum of its proper divisors (1).

311052397 is an equidigital number, since it uses as much as digits as its factorization.

311052397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 311052397 is about 17636.6776066242. The cubic root of 311052397 is about 677.5549422362.

The spelling of 311052397 in words is "three hundred eleven million, fifty-two thousand, three hundred ninety-seven".