13232991 has 8 divisors (see below), whose sum is σ = 18019584. Its totient is φ = 8634200.

The previous prime is 13232983. The next prime is 13233007. The reversal of 13232991 is 19923231.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13232991 - 2³ = 13232983 is a prime.

It is a super-2 number, since 2×13232991² = 350224101612162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13230991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46785 + ... + 47066.

It is an arithmetic number, because the mean of its divisors is an integer number (2252448).

Almost surely, 2^13232991 is an apocalyptic number.

13232991 is a deficient number, since it is larger than the sum of its proper divisors (4786593).

13232991 is an equidigital number, since it uses as much as digits as its factorization.

13232991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93901.

The product of its digits is 2916, while the sum is 30.

The square root of 13232991 is about 3637.7178285293. The cubic root of 13232991 is about 236.5298768698.

The spelling of 13232991 in words is "thirteen million, two hundred thirty-two thousand, nine hundred ninety-one".