13231161 has 16 divisors (see below), whose sum is σ = 19662720. Its totient is φ = 8793360.

The previous prime is 13231159. The next prime is 13231171. The reversal of 13231161 is 16113231.

13231161 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13231161 - 2¹ = 13231159 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13231171) 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, 11916 + ... + 12978.

It is an arithmetic number, because the mean of its divisors is an integer number (1228920).

Almost surely, 2^13231161 is an apocalyptic number.

It is an amenable number.

13231161 is a deficient number, since it is larger than the sum of its proper divisors (6431559).

13231161 is a wasteful number, since it uses less digits than its factorization.

13231161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533 (or 1527 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 13231161 is about 3637.4662885036. The cubic root of 13231161 is about 236.5189730706.

Adding to 13231161 its reverse (16113231), we get a palindrome (29344392).

The spelling of 13231161 in words is "thirteen million, two hundred thirty-one thousand, one hundred sixty-one".