131744997 has 18 divisors (see below), whose sum is σ = 191986886. Its totient is φ = 87057360.

The previous prime is 131744983. The next prime is 131745007. The reversal of 131744997 is 799447131.

It can be written as a sum of positive squares in only one way, i.e., 81703521 + 50041476 = 9039^2 + 7074^2 .

It is not a de Polignac number, because 131744997 - 2⁷ = 131744869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131742997) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 154023 + ... + 154875.

Almost surely, 2^131744997 is an apocalyptic number.

It is an amenable number.

131744997 is a deficient number, since it is larger than the sum of its proper divisors (60241889).

131744997 is an equidigital number, since it uses as much as digits as its factorization.

131744997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121 (or 987 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 131744997 is about 11478.0223470770. The cubic root of 131744997 is about 508.8362507732.

The spelling of 131744997 in words is "one hundred thirty-one million, seven hundred forty-four thousand, nine hundred ninety-seven".