13032231 has 4 divisors (see below), whose sum is σ = 17376312. Its totient is φ = 8688152.

The previous prime is 13032221. The next prime is 13032277. The reversal of 13032231 is 13223031.

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 13032231 - 2⁵ = 13032199 is a prime.

It is a super-2 number, since 2×13032231² = 339678089674722, 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 13032231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13032221) 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, 2172036 + ... + 2172041.

It is an arithmetic number, because the mean of its divisors is an integer number (4344078).

Almost surely, 2^13032231 is an apocalyptic number.

13032231 is a deficient number, since it is larger than the sum of its proper divisors (4344081).

13032231 is an equidigital number, since it uses as much as digits as its factorization.

13032231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4344080.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 13032231 is about 3610.0181439987. The cubic root of 13032231 is about 235.3276311369.

Adding to 13032231 its reverse (13223031), we get a palindrome (26255262).

The spelling of 13032231 in words is "thirteen million, thirty-two thousand, two hundred thirty-one".