15224440231 has 32 divisors (see below), whose sum is σ = 20597423616. Its totient is φ = 10866960000.

The previous prime is 15224440229. The next prime is 15224440241. The reversal of 15224440231 is 13204442251.

It is not a de Polignac number, because 15224440231 - 2¹ = 15224440229 is a prime.

It is a super-2 number, since 2×15224440231² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 15224440231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15224440211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73081 + ... + 189181.

It is an arithmetic number, because the mean of its divisors is an integer number (643669488).

Almost surely, 2^15224440231 is an apocalyptic number.

15224440231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

15224440231 is a deficient number, since it is larger than the sum of its proper divisors (5372983385).

15224440231 is a wasteful number, since it uses less digits than its factorization.

15224440231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116263.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 15224440231 its reverse (13204442251), we get a palindrome (28428882482).

The spelling of 15224440231 in words is "fifteen billion, two hundred twenty-four million, four hundred forty thousand, two hundred thirty-one".