131360161 has 4 divisors (see below), whose sum is σ = 131392324. Its totient is φ = 131328000.

The previous prime is 131360087. The next prime is 131360179. The reversal of 131360161 is 161063131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 161063131 = 53 ⋅3038927.

It can be written as a sum of positive squares in 2 ways, for example, as 77792400 + 53567761 = 8820^2 + 7319^2 .

It is a cyclic number.

It is not a de Polignac number, because 131360161 - 2⁹ = 131359649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131360261) 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, 8880 + ... + 18481.

It is an arithmetic number, because the mean of its divisors is an integer number (32848081).

Almost surely, 2^131360161 is an apocalyptic number.

It is an amenable number.

131360161 is a deficient number, since it is larger than the sum of its proper divisors (32163).

131360161 is an equidigital number, since it uses as much as digits as its factorization.

131360161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32162.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 131360161 is about 11461.2460491868. The cubic root of 131360161 is about 508.3403192686.

The spelling of 131360161 in words is "one hundred thirty-one million, three hundred sixty thousand, one hundred sixty-one".