169369231 has 4 divisors (see below), whose sum is σ = 169396192. Its totient is φ = 169342272.

The previous prime is 169369201. The next prime is 169369243. The reversal of 169369231 is 132963961.

169369231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 169369231 - 2⁷ = 169369103 is a prime.

It is a super-2 number, since 2×169369231² = 57371872819062722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169369201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1471 + ... + 18463.

It is an arithmetic number, because the mean of its divisors is an integer number (42349048).

Almost surely, 2^169369231 is an apocalyptic number.

169369231 is a deficient number, since it is larger than the sum of its proper divisors (26961).

169369231 is an equidigital number, since it uses as much as digits as its factorization.

169369231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26960.

The product of its digits is 52488, while the sum is 40.

The square root of 169369231 is about 13014.1934440825. The cubic root of 169369231 is about 553.2798305150.

The spelling of 169369231 in words is "one hundred sixty-nine million, three hundred sixty-nine thousand, two hundred thirty-one".