131261869 has 8 divisors (see below), whose sum is σ = 135495360. Its totient is φ = 127077600.

The previous prime is 131261863. The next prime is 131261873. The reversal of 131261869 is 968162131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131261869 - 2⁹ = 131261357 is a prime.

It is a super-2 number, since 2×131261869² = 34459356506746322, 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 (131261863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6849 + ... + 17590.

It is an arithmetic number, because the mean of its divisors is an integer number (16936920).

Almost surely, 2^131261869 is an apocalyptic number.

It is an amenable number.

131261869 is a deficient number, since it is larger than the sum of its proper divisors (4233491).

131261869 is a wasteful number, since it uses less digits than its factorization.

131261869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24611.

The product of its digits is 15552, while the sum is 37.

The square root of 131261869 is about 11456.9572313071. The cubic root of 131261869 is about 508.2134968134.

The spelling of 131261869 in words is "one hundred thirty-one million, two hundred sixty-one thousand, eight hundred sixty-nine".