128315576131 has 8 divisors (see below), whose sum is σ = 132772963680. Its totient is φ = 123860369472.

The previous prime is 128315576119. The next prime is 128315576143. The reversal of 128315576131 is 131675513821.

It is an interprime number because it is at equal distance from previous prime (128315576119) and next prime (128315576143).

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 128315576131 - 2¹¹ = 128315574083 is a prime.

It is a super-2 number, since 2×128315576131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128315576161) 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, 425055 + ... + 661288.

It is an arithmetic number, because the mean of its divisors is an integer number (16596620460).

Almost surely, 2^128315576131 is an apocalyptic number.

128315576131 is a deficient number, since it is larger than the sum of its proper divisors (4457387549).

128315576131 is a wasteful number, since it uses less digits than its factorization.

128315576131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090445.

The product of its digits is 151200, while the sum is 43.

The spelling of 128315576131 in words is "one hundred twenty-eight billion, three hundred fifteen million, five hundred seventy-six thousand, one hundred thirty-one".