231169613 has 2 divisors, whose sum is σ = 231169614. Its totient is φ = 231169612.

The previous prime is 231169577. The next prime is 231169633. The reversal of 231169613 is 316961132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117896164 + 113273449 = 10858^2 + 10643^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231169613 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231169613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231169633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115584806 + 115584807.

It is an arithmetic number, because the mean of its divisors is an integer number (115584807).

Almost surely, 2^231169613 is an apocalyptic number.

It is an amenable number.

231169613 is a deficient number, since it is larger than the sum of its proper divisors (1).

231169613 is an equidigital number, since it uses as much as digits as its factorization.

231169613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5832, while the sum is 32.

The square root of 231169613 is about 15204.2629877281. The cubic root of 231169613 is about 613.7293818524.

The spelling of 231169613 in words is "two hundred thirty-one million, one hundred sixty-nine thousand, six hundred thirteen".