131199265 has 4 divisors (see below), whose sum is σ = 157439124. Its totient is φ = 104959408.

The previous prime is 131199253. The next prime is 131199281. The reversal of 131199265 is 562991131.

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 96353856 + 34845409 = 9816^2 + 5903^2 .

It is a cyclic number.

It is not a de Polignac number, because 131199265 - 2¹¹ = 131197217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13119922 + ... + 13119931.

It is an arithmetic number, because the mean of its divisors is an integer number (39359781).

Almost surely, 2^131199265 is an apocalyptic number.

It is an amenable number.

131199265 is a deficient number, since it is larger than the sum of its proper divisors (26239859).

131199265 is an equidigital number, since it uses as much as digits as its factorization.

131199265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26239858.

The product of its digits is 14580, while the sum is 37.

The square root of 131199265 is about 11454.2247664344. The cubic root of 131199265 is about 508.1326882296.

It can be divided in two parts, 1311 and 99265, that added together give a triangular number (100576 = T₄₄₈).

The spelling of 131199265 in words is "one hundred thirty-one million, one hundred ninety-nine thousand, two hundred sixty-five".