311961079 has 2 divisors, whose sum is σ = 311961080. Its totient is φ = 311961078.

The previous prime is 311961077. The next prime is 311961107. The reversal of 311961079 is 970169113.

It is a weak prime.

It is an emirp because it is prime and its reverse (970169113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 311961079 - 2¹ = 311961077 is a prime.

Together with 311961077, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311961073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155980539 + 155980540.

It is an arithmetic number, because the mean of its divisors is an integer number (155980540).

Almost surely, 2^311961079 is an apocalyptic number.

311961079 is a deficient number, since it is larger than the sum of its proper divisors (1).

311961079 is an equidigital number, since it uses as much as digits as its factorization.

311961079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10206, while the sum is 37.

The square root of 311961079 is about 17662.4199644330. The cubic root of 311961079 is about 678.2140845795.

The spelling of 311961079 in words is "three hundred eleven million, nine hundred sixty-one thousand, seventy-nine".