131888945 has 8 divisors (see below), whose sum is σ = 158516736. Its totient is φ = 105344496.

The previous prime is 131888927. The next prime is 131888957. The reversal of 131888945 is 549888131.

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 131888945 - 2¹² = 131884849 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131888945.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17297 + ... + 23726.

It is an arithmetic number, because the mean of its divisors is an integer number (19814592).

Almost surely, 2^131888945 is an apocalyptic number.

It is an amenable number.

131888945 is a deficient number, since it is larger than the sum of its proper divisors (26627791).

131888945 is an equidigital number, since it uses as much as digits as its factorization.

131888945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41671.

The product of its digits is 276480, while the sum is 47.

The square root of 131888945 is about 11484.2912275856. The cubic root of 131888945 is about 509.0215058788.

The spelling of 131888945 in words is "one hundred thirty-one million, eight hundred eighty-eight thousand, nine hundred forty-five".