331124513 has 2 divisors, whose sum is σ = 331124514. Its totient is φ = 331124512.

The previous prime is 331124501. The next prime is 331124527. The reversal of 331124513 is 315421133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 325008784 + 6115729 = 18028^2 + 2473^2 .

It is an emirp because it is prime and its reverse (315421133) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 331124513 - 2⁸ = 331124257 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (331124543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165562256 + 165562257.

It is an arithmetic number, because the mean of its divisors is an integer number (165562257).

Almost surely, 2^331124513 is an apocalyptic number.

It is an amenable number.

331124513 is a deficient number, since it is larger than the sum of its proper divisors (1).

331124513 is an equidigital number, since it uses as much as digits as its factorization.

331124513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 23.

The square root of 331124513 is about 18196.8270036290. The cubic root of 331124513 is about 691.8263685293.

Adding to 331124513 its reverse (315421133), we get a palindrome (646545646).

The spelling of 331124513 in words is "three hundred thirty-one million, one hundred twenty-four thousand, five hundred thirteen".