311013247 has 2 divisors, whose sum is σ = 311013248. Its totient is φ = 311013246.

The previous prime is 311013233. The next prime is 311013251. The reversal of 311013247 is 742310113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 311013247 - 2¹⁵ = 310980479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311713247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155506623 + 155506624.

It is an arithmetic number, because the mean of its divisors is an integer number (155506624).

Almost surely, 2^311013247 is an apocalyptic number.

311013247 is a deficient number, since it is larger than the sum of its proper divisors (1).

311013247 is an equidigital number, since it uses as much as digits as its factorization.

311013247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 311013247 is about 17635.5676687766. The cubic root of 311013247 is about 677.5265146688.

The spelling of 311013247 in words is "three hundred eleven million, thirteen thousand, two hundred forty-seven".