131333617 has 4 divisors (see below), whose sum is σ = 131384740. Its totient is φ = 131282496.

The previous prime is 131333597. The next prime is 131333623. The reversal of 131333617 is 716333131.

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 130667761 + 665856 = 11431^2 + 816^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131333617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131333627) 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, 21492 + ... + 26917.

It is an arithmetic number, because the mean of its divisors is an integer number (32846185).

Almost surely, 2^131333617 is an apocalyptic number.

It is an amenable number.

131333617 is a deficient number, since it is larger than the sum of its proper divisors (51123).

131333617 is an equidigital number, since it uses as much as digits as its factorization.

131333617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51122.

The product of its digits is 3402, while the sum is 28.

The square root of 131333617 is about 11460.0880014073. The cubic root of 131333617 is about 508.3060767851.

Adding to 131333617 its reverse (716333131), we get a palindrome (847666748).

The spelling of 131333617 in words is "one hundred thirty-one million, three hundred thirty-three thousand, six hundred seventeen".