15242112431 has 48 divisors (see below), whose sum is σ = 19546531200. Its totient is φ = 11776407552.

The previous prime is 15242112383. The next prime is 15242112437. The reversal of 15242112431 is 13421124251.

It is a happy number.

It is not a de Polignac number, because 15242112431 - 2²⁶ = 15175003567 is a prime.

It is a super-2 number, since 2×15242112431² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15242112431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15242112437) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8067935 + ... + 8069823.

It is an arithmetic number, because the mean of its divisors is an integer number (407219400).

Almost surely, 2^15242112431 is an apocalyptic number.

15242112431 is a deficient number, since it is larger than the sum of its proper divisors (4304418769).

15242112431 is a wasteful number, since it uses less digits than its factorization.

15242112431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2208 (or 2201 counting only the distinct ones).

The product of its digits is 1920, while the sum is 26.

Adding to 15242112431 its reverse (13421124251), we get a palindrome (28663236682).

The spelling of 15242112431 in words is "fifteen billion, two hundred forty-two million, one hundred twelve thousand, four hundred thirty-one".