331113613 has 2 divisors, whose sum is σ = 331113614. Its totient is φ = 331113612.

The previous prime is 331113599. The next prime is 331113659. The reversal of 331113613 is 316311133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221325129 + 109788484 = 14877^2 + 10478^2 .

It is a cyclic number.

It is not a de Polignac number, because 331113613 - 2¹³ = 331105421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331113413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165556806 + 165556807.

It is an arithmetic number, because the mean of its divisors is an integer number (165556807).

Almost surely, 2^331113613 is an apocalyptic number.

It is an amenable number.

331113613 is a deficient number, since it is larger than the sum of its proper divisors (1).

331113613 is an equidigital number, since it uses as much as digits as its factorization.

331113613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 486, while the sum is 22.

The square root of 331113613 is about 18196.5274983992. The cubic root of 331113613 is about 691.8187772357.

Adding to 331113613 its reverse (316311133), we get a palindrome (647424746).

The spelling of 331113613 in words is "three hundred thirty-one million, one hundred thirteen thousand, six hundred thirteen".