311123313 has 12 divisors (see below), whose sum is σ = 450148608. Its totient is φ = 207070200.

The previous prime is 311123311. The next prime is 311123321. The reversal of 311123313 is 313321113.

It is a happy number.

It is not a de Polignac number, because 311123313 - 2¹ = 311123311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (311123311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23013 + ... + 33938.

It is an arithmetic number, because the mean of its divisors is an integer number (37512384).

Almost surely, 2^311123313 is an apocalyptic number.

It is an amenable number.

311123313 is a deficient number, since it is larger than the sum of its proper divisors (139025295).

311123313 is a wasteful number, since it uses less digits than its factorization.

311123313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57564 (or 57561 counting only the distinct ones).

The product of its digits is 162, while the sum is 18.

The square root of 311123313 is about 17638.6879614103. The cubic root of 311123313 is about 677.6064296337.

Adding to 311123313 its reverse (313321113), we get a palindrome (624444426).

The spelling of 311123313 in words is "three hundred eleven million, one hundred twenty-three thousand, three hundred thirteen".