131567461 has 4 divisors (see below), whose sum is σ = 136104300. Its totient is φ = 127030624.

The previous prime is 131567407. The next prime is 131567467. The reversal of 131567461 is 164765131.

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 68062500 + 63504961 = 8250^2 + 7969^2 .

It is a cyclic number.

It is not a de Polignac number, because 131567461 - 2⁹ = 131566949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131567467) 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, 2268376 + ... + 2268433.

It is an arithmetic number, because the mean of its divisors is an integer number (34026075).

Almost surely, 2^131567461 is an apocalyptic number.

It is an amenable number.

131567461 is a deficient number, since it is larger than the sum of its proper divisors (4536839).

131567461 is an equidigital number, since it uses as much as digits as its factorization.

131567461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4536838.

The product of its digits is 15120, while the sum is 34.

The square root of 131567461 is about 11470.2860034090. The cubic root of 131567461 is about 508.6075833638.

The spelling of 131567461 in words is "one hundred thirty-one million, five hundred sixty-seven thousand, four hundred sixty-one".