15131023040 has 112 divisors (see below), whose sum is σ = 41314006272. Its totient is φ = 5170646016.

The previous prime is 15131023007. The next prime is 15131023091. The reversal of 15131023040 is 4032013151.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 676679 + ... + 698681.

It is an arithmetic number, because the mean of its divisors is an integer number (368875056).

Almost surely, 2^15131023040 is an apocalyptic number.

15131023040 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 15131023040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20657003136).

15131023040 is an abundant number, since it is smaller than the sum of its proper divisors (26182983232).

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

15131023040 is a wasteful number, since it uses less digits than its factorization.

15131023040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22334 (or 22324 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 15131023040 its reverse (4032013151), we get a palindrome (19163036191).

The spelling of 15131023040 in words is "fifteen billion, one hundred thirty-one million, twenty-three thousand, forty".