13133491 has 16 divisors (see below), whose sum is σ = 16035840. Its totient is φ = 10513440.

The previous prime is 13133479. The next prime is 13133507. The reversal of 13133491 is 19433131.

13133491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13133491 - 2⁷ = 13133363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13133411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5250 + ... + 7336.

It is an arithmetic number, because the mean of its divisors is an integer number (1002240).

Almost surely, 2^13133491 is an apocalyptic number.

13133491 is a deficient number, since it is larger than the sum of its proper divisors (2902349).

13133491 is a wasteful number, since it uses less digits than its factorization.

13133491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2154.

The product of its digits is 972, while the sum is 25.

The square root of 13133491 is about 3624.0158664112. The cubic root of 13133491 is about 235.9355552754.

The spelling of 13133491 in words is "thirteen million, one hundred thirty-three thousand, four hundred ninety-one".