15224231 has 12 divisors (see below), whose sum is σ = 17646360. Its totient is φ = 13023360.

The previous prime is 15224227. The next prime is 15224233. The reversal of 15224231 is 13242251.

It is not a de Polignac number, because 15224231 - 2² = 15224227 is a prime.

It is a super-2 number, since 2×15224231² = 463554419082722, 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 (15224233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 785 + ... + 5573.

It is an arithmetic number, because the mean of its divisors is an integer number (1470530).

Almost surely, 2^15224231 is an apocalyptic number.

15224231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

15224231 is a deficient number, since it is larger than the sum of its proper divisors (2422129).

15224231 is a wasteful number, since it uses less digits than its factorization.

15224231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4834 (or 4817 counting only the distinct ones).

The product of its digits is 480, while the sum is 20.

The square root of 15224231 is about 3901.8240606158. The cubic root of 15224231 is about 247.8440258835.

Adding to 15224231 its reverse (13242251), we get a palindrome (28466482).

The spelling of 15224231 in words is "fifteen million, two hundred twenty-four thousand, two hundred thirty-one".