131000797 has 4 divisors (see below), whose sum is σ = 133788096. Its totient is φ = 128213500.

The previous prime is 131000773. The next prime is 131000813. The reversal of 131000797 is 797000131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131000797 - 2¹⁹ = 130476509 is a prime.

It is a super-2 number, since 2×131000797² = 34322417629270418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131000767) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1393579 + ... + 1393672.

It is an arithmetic number, because the mean of its divisors is an integer number (33447024).

Almost surely, 2^131000797 is an apocalyptic number.

It is an amenable number.

131000797 is a deficient number, since it is larger than the sum of its proper divisors (2787299).

131000797 is an equidigital number, since it uses as much as digits as its factorization.

131000797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2787298.

The product of its (nonzero) digits is 1323, while the sum is 28.

The square root of 131000797 is about 11445.5579593133. The cubic root of 131000797 is about 507.8763377771.

The spelling of 131000797 in words is "one hundred thirty-one million, seven hundred ninety-seven", and thus it is an aban number.