15017231 has 2 divisors, whose sum is σ = 15017232. Its totient is φ = 15017230.

The previous prime is 15017209. The next prime is 15017243. The reversal of 15017231 is 13271051.

15017231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (13271051) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15017231 - 2¹⁰ = 15016207 is a prime.

It is a super-2 number, since 2×15017231² = 451034453814722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15017251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7508615 + 7508616.

It is an arithmetic number, because the mean of its divisors is an integer number (7508616).

Almost surely, 2^15017231 is an apocalyptic number.

15017231 is a deficient number, since it is larger than the sum of its proper divisors (1).

15017231 is an equidigital number, since it uses as much as digits as its factorization.

15017231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 15017231 is about 3875.2072202658. The cubic root of 15017231 is about 246.7156052968.

Adding to 15017231 its reverse (13271051), we get a palindrome (28288282).

The spelling of 15017231 in words is "fifteen million, seventeen thousand, two hundred thirty-one".