131409797 has 8 divisors (see below), whose sum is σ = 135123072. Its totient is φ = 127720800.

The previous prime is 131409793. The next prime is 131409823. The reversal of 131409797 is 797904131.

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 131409797 - 2² = 131409793 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131409793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5198 + ... + 17024.

It is an arithmetic number, because the mean of its divisors is an integer number (16890384).

Almost surely, 2^131409797 is an apocalyptic number.

It is an amenable number.

131409797 is a deficient number, since it is larger than the sum of its proper divisors (3713275).

131409797 is a wasteful number, since it uses less digits than its factorization.

131409797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12139.

The product of its (nonzero) digits is 47628, while the sum is 41.

The square root of 131409797 is about 11463.4112287748. The cubic root of 131409797 is about 508.4043386853.

The spelling of 131409797 in words is "one hundred thirty-one million, four hundred nine thousand, seven hundred ninety-seven".