15231210442 has 16 divisors (see below), whose sum is σ = 26309967552. Its totient is φ = 6477831360.

The previous prime is 15231210347. The next prime is 15231210473. The reversal of 15231210442 is 24401213251.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4150623 + ... + 4154290.

It is an arithmetic number, because the mean of its divisors is an integer number (1644372972).

Almost surely, 2^15231210442 is an apocalyptic number.

15231210442 is a deficient number, since it is larger than the sum of its proper divisors (11078757110).

15231210442 is a wasteful number, since it uses less digits than its factorization.

15231210442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8305053.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 15231210442 its reverse (24401213251), we get a palindrome (39632423693).

The spelling of 15231210442 in words is "fifteen billion, two hundred thirty-one million, two hundred ten thousand, four hundred forty-two".