131333317 has 2 divisors, whose sum is σ = 131333318. Its totient is φ = 131333316.

The previous prime is 131333303. The next prime is 131333353. The reversal of 131333317 is 713333131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80838081 + 50495236 = 8991^2 + 7106^2 .

It is a cyclic number.

It is not a de Polignac number, because 131333317 - 2¹¹ = 131331269 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131333291 and 131333300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131333357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65666658 + 65666659.

It is an arithmetic number, because the mean of its divisors is an integer number (65666659).

Almost surely, 2^131333317 is an apocalyptic number.

It is an amenable number.

131333317 is a deficient number, since it is larger than the sum of its proper divisors (1).

131333317 is an equidigital number, since it uses as much as digits as its factorization.

131333317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1701, while the sum is 25.

The square root of 131333317 is about 11460.0749124951. The cubic root of 131333317 is about 508.3056897506.

Adding to 131333317 its reverse (713333131), we get a palindrome (844666448).

The spelling of 131333317 in words is "one hundred thirty-one million, three hundred thirty-three thousand, three hundred seventeen".