311714639 has 2 divisors, whose sum is σ = 311714640. Its totient is φ = 311714638.

The previous prime is 311714597. The next prime is 311714651. The reversal of 311714639 is 936417113.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (936417113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 311714639 - 2²⁰ = 310666063 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 311714599 and 311714608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311714339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155857319 + 155857320.

It is an arithmetic number, because the mean of its divisors is an integer number (155857320).

Almost surely, 2^311714639 is an apocalyptic number.

311714639 is a deficient number, since it is larger than the sum of its proper divisors (1).

311714639 is an equidigital number, since it uses as much as digits as its factorization.

311714639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 35.

The square root of 311714639 is about 17655.4421921401. The cubic root of 311714639 is about 678.0354478614.

The spelling of 311714639 in words is "three hundred eleven million, seven hundred fourteen thousand, six hundred thirty-nine".