311319049 has 4 divisors (see below), whose sum is σ = 311636736. Its totient is φ = 311001364.

The previous prime is 311318993. The next prime is 311319083. The reversal of 311319049 is 940913113.

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 311319049 - 2⁹ = 311318537 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 311319049.

It is not an unprimeable number, because it can be changed into a prime (311313049) 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, 157369 + ... + 159334.

It is an arithmetic number, because the mean of its divisors is an integer number (77909184).

Almost surely, 2^311319049 is an apocalyptic number.

It is an amenable number.

311319049 is a deficient number, since it is larger than the sum of its proper divisors (317687).

311319049 is an equidigital number, since it uses as much as digits as its factorization.

311319049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317686.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 311319049 is about 17644.2355742605. The cubic root of 311319049 is about 677.7484999556.

The spelling of 311319049 in words is "three hundred eleven million, three hundred nineteen thousand, forty-nine".