311727213 has 24 divisors (see below), whose sum is σ = 516483968. Its totient is φ = 177476832.

The previous prime is 311727203. The next prime is 311727233. The reversal of 311727213 is 312727113.

It is not a de Polignac number, because 311727213 - 2⁸ = 311726957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311727203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8520 + ... + 26382.

Almost surely, 2^311727213 is an apocalyptic number.

It is an amenable number.

311727213 is a deficient number, since it is larger than the sum of its proper divisors (204756755).

311727213 is a wasteful number, since it uses less digits than its factorization.

311727213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18153 (or 18150 counting only the distinct ones).

The product of its digits is 1764, while the sum is 27.

The square root of 311727213 is about 17655.7982827172. The cubic root of 311727213 is about 678.0445646432.

The spelling of 311727213 in words is "three hundred eleven million, seven hundred twenty-seven thousand, two hundred thirteen".