311306345 has 32 divisors (see below), whose sum is σ = 440284416. Its totient is φ = 206841600.

The previous prime is 311306327. The next prime is 311306377. The reversal of 311306345 is 543603113.

It is a de Polignac number, because none of the positive numbers 2^k-311306345 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 544910 + ... + 545480.

It is an arithmetic number, because the mean of its divisors is an integer number (13758888).

Almost surely, 2^311306345 is an apocalyptic number.

311306345 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

311306345 is a deficient number, since it is larger than the sum of its proper divisors (128978071).

311306345 is a wasteful number, since it uses less digits than its factorization.

311306345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 311306345 is about 17643.8755663261. The cubic root of 311306345 is about 677.7392808666.

Adding to 311306345 its reverse (543603113), we get a palindrome (854909458).

The spelling of 311306345 in words is "three hundred eleven million, three hundred six thousand, three hundred forty-five".