13290231 has 8 divisors (see below), whose sum is σ = 17737200. Its totient is φ = 8851712.

The previous prime is 13290229. The next prime is 13290239. The reversal of 13290231 is 13209231.

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 13290231 - 2¹ = 13290229 is a prime.

It is a super-2 number, since 2×13290231² = 353260480066722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13290198 and 13290207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13290239) 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, 4711 + ... + 6983.

It is an arithmetic number, because the mean of its divisors is an integer number (2217150).

Almost surely, 2^13290231 is an apocalyptic number.

13290231 is the 1949-th nonagonal number.

13290231 is a deficient number, since it is larger than the sum of its proper divisors (4446969).

13290231 is a wasteful number, since it uses less digits than its factorization.

13290231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4225.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 13290231 is about 3645.5769090776. The cubic root of 13290231 is about 236.8704271342.

Adding to 13290231 its reverse (13209231), we get a palindrome (26499462).

The spelling of 13290231 in words is "thirteen million, two hundred ninety thousand, two hundred thirty-one".