311111347 has 2 divisors, whose sum is σ = 311111348. Its totient is φ = 311111346.

The previous prime is 311111309. The next prime is 311111387. The reversal of 311111347 is 743111113.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311111347 is a prime.

It is not a weakly prime, because it can be changed into another prime (311111387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155555673 + 155555674.

It is an arithmetic number, because the mean of its divisors is an integer number (155555674).

Almost surely, 2^311111347 is an apocalyptic number.

311111347 is a deficient number, since it is larger than the sum of its proper divisors (1).

311111347 is an equidigital number, since it uses as much as digits as its factorization.

311111347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 252, while the sum is 22.

The square root of 311111347 is about 17638.3487605841. The cubic root of 311111347 is about 677.5977424646.

The spelling of 311111347 in words is "three hundred eleven million, one hundred eleven thousand, three hundred forty-seven".