15103231 has 16 divisors (see below), whose sum is σ = 18321408. Its totient is φ = 12261600.

The previous prime is 15103201. The next prime is 15103267. The reversal of 15103231 is 13230151.

It is not a de Polignac number, because 15103231 - 2⁷ = 15103103 is a prime.

It is a super-2 number, since 2×15103231² = 456215173278722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15103201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2730 + ... + 6136.

It is an arithmetic number, because the mean of its divisors is an integer number (1145088).

Almost surely, 2^15103231 is an apocalyptic number.

15103231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

15103231 is a deficient number, since it is larger than the sum of its proper divisors (3218177).

15103231 is a wasteful number, since it uses less digits than its factorization.

15103231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3462.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 15103231 is about 3886.2875601273. The cubic root of 15103231 is about 247.1856690494.

Adding to 15103231 its reverse (13230151), we get a palindrome (28333382).

Subtracting from 15103231 its reverse (13230151), we obtain a triangular number (1873080 = T₁₉₃₅).

The spelling of 15103231 in words is "fifteen million, one hundred three thousand, two hundred thirty-one".