131207269 has 4 divisors (see below), whose sum is σ = 131253696. Its totient is φ = 131160844.

The previous prime is 131207231. The next prime is 131207273. The reversal of 131207269 is 962702131.

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, and also an emirpimes, since its reverse is a distinct semiprime: 962702131 = 18181 ⋅52951.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131207269 is a prime.

It is a super-2 number, since 2×131207269² = 34430694876876722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131207269.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131207669) 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, 18679 + ... + 24724.

It is an arithmetic number, because the mean of its divisors is an integer number (32813424).

Almost surely, 2^131207269 is an apocalyptic number.

It is an amenable number.

131207269 is a deficient number, since it is larger than the sum of its proper divisors (46427).

131207269 is an equidigital number, since it uses as much as digits as its factorization.

131207269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46426.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 131207269 is about 11454.5741518400. The cubic root of 131207269 is about 508.1430211415.

The spelling of 131207269 in words is "one hundred thirty-one million, two hundred seven thousand, two hundred sixty-nine".