131605182928 has 10 divisors (see below), whose sum is σ = 254985041954. Its totient is φ = 65802591456.

The previous prime is 131605182881. The next prime is 131605182949. The reversal of 131605182928 is 829281506131.

131605182928 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 131603523984 + 1658944 = 362772^2 + 1288^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4112661951 + ... + 4112661982.

Almost surely, 2^131605182928 is an apocalyptic number.

It is an amenable number.

131605182928 is a deficient number, since it is larger than the sum of its proper divisors (123379859026).

131605182928 is an equidigital number, since it uses as much as digits as its factorization.

131605182928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8225323941 (or 8225323935 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 46.

The spelling of 131605182928 in words is "one hundred thirty-one billion, six hundred five million, one hundred eighty-two thousand, nine hundred twenty-eight".