15131243040 has 192 divisors, whose sum is σ = 50654419200. Its totient is φ = 3783557120.

The previous prime is 15131243021. The next prime is 15131243041. The reversal of 15131243040 is 4034213151.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 15131243040.

It is not an unprimeable number, because it can be changed into a prime (15131243041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2289661 + ... + 2296259.

It is an arithmetic number, because the mean of its divisors is an integer number (263825100).

Almost surely, 2^15131243040 is an apocalyptic number.

15131243040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15131243040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25327209600).

15131243040 is an abundant number, since it is smaller than the sum of its proper divisors (35523176160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15131243040 is a wasteful number, since it uses less digits than its factorization.

15131243040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6915 (or 6907 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 15131243040 its reverse (4034213151), we get a palindrome (19165456191).

The spelling of 15131243040 in words is "fifteen billion, one hundred thirty-one million, two hundred forty-three thousand, forty".