131320265 has 16 divisors (see below), whose sum is σ = 163468800. Its totient is φ = 101153472.

The previous prime is 131320261. The next prime is 131320297. The reversal of 131320265 is 562023131.

It is a cyclic number.

It is not a de Polignac number, because 131320265 - 2² = 131320261 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131320265.

It is not an unprimeable number, because it can be changed into a prime (131320261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62624 + ... + 64686.

It is an arithmetic number, because the mean of its divisors is an integer number (10216800).

Almost surely, 2^131320265 is an apocalyptic number.

It is an amenable number.

131320265 is a deficient number, since it is larger than the sum of its proper divisors (32148535).

131320265 is a wasteful number, since it uses less digits than its factorization.

131320265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2536.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 131320265 is about 11459.5054430809. The cubic root of 131320265 is about 508.2888505971.

Adding to 131320265 its reverse (562023131), we get a palindrome (693343396).

The spelling of 131320265 in words is "one hundred thirty-one million, three hundred twenty thousand, two hundred sixty-five".