311344109 has 4 divisors (see below), whose sum is σ = 315991104. Its totient is φ = 306697116.

The previous prime is 311344091. The next prime is 311344139. The reversal of 311344109 is 901443113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 311344109 - 2²⁴ = 294566893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311344139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2323397 + ... + 2323530.

It is an arithmetic number, because the mean of its divisors is an integer number (78997776).

Almost surely, 2^311344109 is an apocalyptic number.

It is an amenable number.

311344109 is a deficient number, since it is larger than the sum of its proper divisors (4646995).

311344109 is an equidigital number, since it uses as much as digits as its factorization.

311344109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4646994.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 311344109 is about 17644.9457069156. The cubic root of 311344109 is about 677.7666848603.

The spelling of 311344109 in words is "three hundred eleven million, three hundred forty-four thousand, one hundred nine".