13203231 has 8 divisors (see below), whose sum is σ = 17852544. Its totient is φ = 8678040.

The previous prime is 13203217. The next prime is 13203251. The reversal of 13203231 is 13230231.

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

It is not a de Polignac number, because 13203231 - 2⁶ = 13203167 is a prime.

It is a super-2 number, since 2×13203231² = 348650617678722, 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 13203231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13203251) 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, 30781 + ... + 31206.

It is an arithmetic number, because the mean of its divisors is an integer number (2231568).

Almost surely, 2^13203231 is an apocalyptic number.

13203231 is a deficient number, since it is larger than the sum of its proper divisors (4649313).

13203231 is an equidigital number, since it uses as much as digits as its factorization.

13203231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62061.

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

The square root of 13203231 is about 3633.6250494513. The cubic root of 13203231 is about 236.3524311570.

Adding to 13203231 its reverse (13230231), we get a palindrome (26433462).

Subtracting 13203231 from its reverse (13230231), we obtain a cube (27000 = 30³).

The spelling of 13203231 in words is "thirteen million, two hundred three thousand, two hundred thirty-one".