15224452231 has 4 divisors (see below), whose sum is σ = 15242862312. Its totient is φ = 15206042152.

The previous prime is 15224452193. The next prime is 15224452291. The reversal of 15224452231 is 13225442251.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 15224452231 - 2⁹ = 15224451719 is a prime.

It is a super-2 number, since 2×15224452231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15224452193 and 15224452202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15224452291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9203800 + ... + 9205453.

It is an arithmetic number, because the mean of its divisors is an integer number (3810715578).

Almost surely, 2^15224452231 is an apocalyptic number.

15224452231 is a deficient number, since it is larger than the sum of its proper divisors (18410081).

15224452231 is an equidigital number, since it uses as much as digits as its factorization.

15224452231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18410080.

The product of its digits is 19200, while the sum is 31.

Adding to 15224452231 its reverse (13225442251), we get a palindrome (28449894482).

The spelling of 15224452231 in words is "fifteen billion, two hundred twenty-four million, four hundred fifty-two thousand, two hundred thirty-one".