328981131137 has 4 divisors (see below), whose sum is σ = 328982290176. Its totient is φ = 328979972100.

The previous prime is 328981131133. The next prime is 328981131139. The reversal of 328981131137 is 731131189823.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 328981131137 - 2² = 328981131133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 328981131091 and 328981131100.

It is not an unprimeable number, because it can be changed into a prime (328981131133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165512 + ... + 827862.

It is an arithmetic number, because the mean of its divisors is an integer number (82245572544).

Almost surely, 2^328981131137 is an apocalyptic number.

It is an amenable number.

328981131137 is a deficient number, since it is larger than the sum of its proper divisors (1159039).

328981131137 is an equidigital number, since it uses as much as digits as its factorization.

328981131137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159038.

The product of its digits is 217728, while the sum is 47.

The spelling of 328981131137 in words is "three hundred twenty-eight billion, nine hundred eighty-one million, one hundred thirty-one thousand, one hundred thirty-seven".