328155806131 has 4 divisors (see below), whose sum is σ = 328173704712. Its totient is φ = 328137907552.

The previous prime is 328155806101. The next prime is 328155806141. The reversal of 328155806131 is 131608551823.

It is a happy number.

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 328155806131 - 2⁷ = 328155806003 is a prime.

It is a super-2 number, since 2×328155806131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328155806101) 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, 8921761 + ... + 8958466.

It is an arithmetic number, because the mean of its divisors is an integer number (82043426178).

Almost surely, 2^328155806131 is an apocalyptic number.

328155806131 is a deficient number, since it is larger than the sum of its proper divisors (17898581).

328155806131 is a wasteful number, since it uses less digits than its factorization.

328155806131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17898580.

The product of its (nonzero) digits is 172800, while the sum is 43.

The spelling of 328155806131 in words is "three hundred twenty-eight billion, one hundred fifty-five million, eight hundred six thousand, one hundred thirty-one".