231479169 has 4 divisors (see below), whose sum is σ = 308638896. Its totient is φ = 154319444.

The previous prime is 231479167. The next prime is 231479207. The reversal of 231479169 is 961974132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231479169 - 2¹ = 231479167 is a prime.

It is a super-2 number, since 2×231479169² = 107165211361861122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231479169.

It is not an unprimeable number, because it can be changed into a prime (231479161) 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, 38579859 + ... + 38579864.

It is an arithmetic number, because the mean of its divisors is an integer number (77159724).

Almost surely, 2^231479169 is an apocalyptic number.

It is an amenable number.

231479169 is a deficient number, since it is larger than the sum of its proper divisors (77159727).

231479169 is an equidigital number, since it uses as much as digits as its factorization.

231479169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77159726.

The product of its digits is 81648, while the sum is 42.

The square root of 231479169 is about 15214.4394901685. The cubic root of 231479169 is about 614.0032051455.

The spelling of 231479169 in words is "two hundred thirty-one million, four hundred seventy-nine thousand, one hundred sixty-nine".