15143642131 has 4 divisors (see below), whose sum is σ = 15222106792. Its totient is φ = 15065177472.

The previous prime is 15143642119. The next prime is 15143642161. The reversal of 15143642131 is 13124634151.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 15143642131 - 2⁵ = 15143642099 is a prime.

It is a super-2 number, since 2×15143642131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15143642093 and 15143642102.

It is not an unprimeable number, because it can be changed into a prime (15143642161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39232041 + ... + 39232426.

It is an arithmetic number, because the mean of its divisors is an integer number (3805526698).

Almost surely, 2^15143642131 is an apocalyptic number.

15143642131 is a deficient number, since it is larger than the sum of its proper divisors (78464661).

15143642131 is an equidigital number, since it uses as much as digits as its factorization.

15143642131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78464660.

The product of its digits is 8640, while the sum is 31.

The spelling of 15143642131 in words is "fifteen billion, one hundred forty-three million, six hundred forty-two thousand, one hundred thirty-one".