15231232243 has 2 divisors, whose sum is σ = 15231232244. Its totient is φ = 15231232242.

The previous prime is 15231232217. The next prime is 15231232253. The reversal of 15231232243 is 34223213251.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15231232243 - 2²⁵ = 15197677811 is a prime.

It is a super-2 number, since 2×15231232243² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15231232213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7615616121 + 7615616122.

It is an arithmetic number, because the mean of its divisors is an integer number (7615616122).

Almost surely, 2^15231232243 is an apocalyptic number.

15231232243 is a deficient number, since it is larger than the sum of its proper divisors (1).

15231232243 is an equidigital number, since it uses as much as digits as its factorization.

15231232243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 28.

Adding to 15231232243 its reverse (34223213251), we get a palindrome (49454445494).

The spelling of 15231232243 in words is "fifteen billion, two hundred thirty-one million, two hundred thirty-two thousand, two hundred forty-three".