15000020131 has 8 divisors (see below), whose sum is σ = 15054215040. Its totient is φ = 14945865792.

The previous prime is 15000020093. The next prime is 15000020171. The reversal of 15000020131 is 13102000051.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15000020131 - 2¹¹ = 15000018083 is a prime.

It is a super-2 number, since 2×15000020131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15000020171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 864366 + ... + 881548.

It is an arithmetic number, because the mean of its divisors is an integer number (1881776880).

Almost surely, 2^15000020131 is an apocalyptic number.

15000020131 is a deficient number, since it is larger than the sum of its proper divisors (54194909).

15000020131 is a wasteful number, since it uses less digits than its factorization.

15000020131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20285.

The product of its (nonzero) digits is 30, while the sum is 13.

Adding to 15000020131 its reverse (13102000051), we get a palindrome (28102020182).

The spelling of 15000020131 in words is "fifteen billion, twenty thousand, one hundred thirty-one".