131924797 has 4 divisors (see below), whose sum is σ = 133732060. Its totient is φ = 130117536.

The previous prime is 131924759. The next prime is 131924801. The reversal of 131924797 is 797429131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 104162436 + 27762361 = 10206^2 + 5269^2 .

It is a de Polignac number, because none of the positive numbers 2^k-131924797 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 (131924717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 903522 + ... + 903667.

It is an arithmetic number, because the mean of its divisors is an integer number (33433015).

Almost surely, 2^131924797 is an apocalyptic number.

It is an amenable number.

131924797 is a deficient number, since it is larger than the sum of its proper divisors (1807263).

131924797 is an equidigital number, since it uses as much as digits as its factorization.

131924797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1807262.

The product of its digits is 95256, while the sum is 43.

The square root of 131924797 is about 11485.8520363097. The cubic root of 131924797 is about 509.0676249468.

The spelling of 131924797 in words is "one hundred thirty-one million, nine hundred twenty-four thousand, seven hundred ninety-seven".