311642313 has 16 divisors (see below), whose sum is σ = 437779200. Its totient is φ = 196652880.

The previous prime is 311642299. The next prime is 311642321. The reversal of 311642313 is 313246113.

It is a happy number.

It is not a de Polignac number, because 311642313 - 2¹³ = 311634121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (311642333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101718 + ... + 104736.

It is an arithmetic number, because the mean of its divisors is an integer number (27361200).

Almost surely, 2^311642313 is an apocalyptic number.

It is an amenable number.

311642313 is a deficient number, since it is larger than the sum of its proper divisors (126136887).

311642313 is a wasteful number, since it uses less digits than its factorization.

311642313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4852.

The product of its digits is 1296, while the sum is 24.

The square root of 311642313 is about 17653.3938096900. The cubic root of 311642313 is about 677.9830031155.

Adding to 311642313 its reverse (313246113), we get a palindrome (624888426).

The spelling of 311642313 in words is "three hundred eleven million, six hundred forty-two thousand, three hundred thirteen".