311231313313 has 4 divisors (see below), whose sum is σ = 324763109568. Its totient is φ = 297699517060.

The previous prime is 311231313311. The next prime is 311231313373. The reversal of 311231313313 is 313313132113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 313313132113 = 1721 ⋅182052953.

It is a cyclic number.

It is not a de Polignac number, because 311231313313 - 2¹ = 311231313311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311231313311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6765898093 + ... + 6765898138.

It is an arithmetic number, because the mean of its divisors is an integer number (81190777392).

Almost surely, 2^311231313313 is an apocalyptic number.

It is an amenable number.

311231313313 is a deficient number, since it is larger than the sum of its proper divisors (13531796255).

311231313313 is a wasteful number, since it uses less digits than its factorization.

311231313313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13531796254.

The product of its digits is 1458, while the sum is 25.

Adding to 311231313313 its reverse (313313132113), we get a palindrome (624544445426).

The spelling of 311231313313 in words is "three hundred eleven billion, two hundred thirty-one million, three hundred thirteen thousand, three hundred thirteen".