131481305 has 8 divisors (see below), whose sum is σ = 158340744. Its totient is φ = 104809600.

The previous prime is 131481299. The next prime is 131481319. The reversal of 131481305 is 503184131.

It can be written as a sum of positive squares in 4 ways, for example, as 15531481 + 115949824 = 3941^2 + 10768^2 .

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

It is not a de Polignac number, because 131481305 - 2⁴ = 131481289 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45386 + ... + 48195.

It is an arithmetic number, because the mean of its divisors is an integer number (19792593).

Almost surely, 2^131481305 is an apocalyptic number.

It is an amenable number.

131481305 is a deficient number, since it is larger than the sum of its proper divisors (26859439).

131481305 is an equidigital number, since it uses as much as digits as its factorization.

131481305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93867.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 131481305 is about 11466.5297714697. The cubic root of 131481305 is about 508.4965397895.

The spelling of 131481305 in words is "one hundred thirty-one million, four hundred eighty-one thousand, three hundred five".