15231113047 has 2 divisors, whose sum is σ = 15231113048. Its totient is φ = 15231113046.

The previous prime is 15231113041. The next prime is 15231113111. The reversal of 15231113047 is 74031113251.

It is a weak prime.

It is an emirp because it is prime and its reverse (74031113251) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15231113047 - 2¹⁵ = 15231080279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15231113041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7615556523 + 7615556524.

It is an arithmetic number, because the mean of its divisors is an integer number (7615556524).

Almost surely, 2^15231113047 is an apocalyptic number.

15231113047 is a deficient number, since it is larger than the sum of its proper divisors (1).

15231113047 is an equidigital number, since it uses as much as digits as its factorization.

15231113047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 28.

Adding to 15231113047 its reverse (74031113251), we get a palindrome (89262226298).

The spelling of 15231113047 in words is "fifteen billion, two hundred thirty-one million, one hundred thirteen thousand, forty-seven".