3111231313 has 2 divisors, whose sum is σ = 3111231314. Its totient is φ = 3111231312.

The previous prime is 3111231239. The next prime is 3111231329. The reversal of 3111231313 is 3131321113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2073618369 + 1037612944 = 45537^2 + 32212^2 .

It is a cyclic number.

It is not a de Polignac number, because 3111231313 - 2¹³ = 3111223121 is a prime.

It is not a weakly prime, because it can be changed into another prime (3111231113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1555615656 + 1555615657.

It is an arithmetic number, because the mean of its divisors is an integer number (1555615657).

Almost surely, 2^3111231313 is an apocalyptic number.

It is an amenable number.

3111231313 is a deficient number, since it is larger than the sum of its proper divisors (1).

3111231313 is an equidigital number, since it uses as much as digits as its factorization.

3111231313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162, while the sum is 19.

The square root of 3111231313 is about 55778.4126073878. The cubic root of 3111231313 is about 1459.8585139993.

Adding to 3111231313 its reverse (3131321113), we get a palindrome (6242552426).

The spelling of 3111231313 in words is "three billion, one hundred eleven million, two hundred thirty-one thousand, three hundred thirteen".