3231111313 has 4 divisors (see below), whose sum is σ = 3309918948. Its totient is φ = 3152303680.

The previous prime is 3231111293. The next prime is 3231111337. The reversal of 3231111313 is 3131111323.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 790059664 + 2441051649 = 28108^2 + 49407^2 .

It is a cyclic number.

It is not a de Polignac number, because 3231111313 - 2⁹ = 3231110801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3231111343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39403756 + ... + 39403837.

It is an arithmetic number, because the mean of its divisors is an integer number (827479737).

Almost surely, 2^3231111313 is an apocalyptic number.

It is an amenable number.

3231111313 is a deficient number, since it is larger than the sum of its proper divisors (78807635).

3231111313 is an equidigital number, since it uses as much as digits as its factorization.

3231111313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78807634.

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

The square root of 3231111313 is about 56842.8651019633. The cubic root of 3231111313 is about 1478.3728332185.

Adding to 3231111313 its reverse (3131111323), we get a palindrome (6362222636).

The spelling of 3231111313 in words is "three billion, two hundred thirty-one million, one hundred eleven thousand, three hundred thirteen".