311893049 has 6 divisors (see below), whose sum is σ = 337730526. Its totient is φ = 287901120.

The previous prime is 311893039. The next prime is 311893051. The reversal of 311893049 is 940398113.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 10627600 + 301265449 = 3260^2 + 17357^2 .

It is not a de Polignac number, because 311893049 - 2¹⁶ = 311827513 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (311893009) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 922592 + ... + 922929.

It is an arithmetic number, because the mean of its divisors is an integer number (56288421).

Almost surely, 2^311893049 is an apocalyptic number.

It is an amenable number.

311893049 is a deficient number, since it is larger than the sum of its proper divisors (25837477).

311893049 is a wasteful number, since it uses less digits than its factorization.

311893049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1845547 (or 1845534 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 311893049 is about 17660.4940191377. The cubic root of 311893049 is about 678.1647811444.

The spelling of 311893049 in words is "three hundred eleven million, eight hundred ninety-three thousand, forty-nine".