131427305 has 4 divisors (see below), whose sum is σ = 157712772. Its totient is φ = 105141840.

The previous prime is 131427301. The next prime is 131427341. The reversal of 131427305 is 503724131.

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 19829209 + 111598096 = 4453^2 + 10564^2 .

It is not a de Polignac number, because 131427305 - 2² = 131427301 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131427301) 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, 13142726 + ... + 13142735.

It is an arithmetic number, because the mean of its divisors is an integer number (39428193).

Almost surely, 2^131427305 is an apocalyptic number.

It is an amenable number.

131427305 is a deficient number, since it is larger than the sum of its proper divisors (26285467).

131427305 is an equidigital number, since it uses as much as digits as its factorization.

131427305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26285466.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 131427305 is about 11464.1748503763. The cubic root of 131427305 is about 508.4269162711.

The spelling of 131427305 in words is "one hundred thirty-one million, four hundred twenty-seven thousand, three hundred five".