131335361 has 2 divisors, whose sum is σ = 131335362. Its totient is φ = 131335360.

The previous prime is 131335349. The next prime is 131335397. The reversal of 131335361 is 163533131.

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., 131217025 + 118336 = 11455^2 + 344^2 .

It is a cyclic number.

It is not a de Polignac number, because 131335361 - 2⁶ = 131335297 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131335361.

It is not a weakly prime, because it can be changed into another prime (131335301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65667680 + 65667681.

It is an arithmetic number, because the mean of its divisors is an integer number (65667681).

Almost surely, 2^131335361 is an apocalyptic number.

It is an amenable number.

131335361 is a deficient number, since it is larger than the sum of its proper divisors (1).

131335361 is an equidigital number, since it uses as much as digits as its factorization.

131335361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2430, while the sum is 26.

The square root of 131335361 is about 11460.1640913209. The cubic root of 131335361 is about 508.3083267343.

Adding to 131335361 its reverse (163533131), we get a palindrome (294868492).

The spelling of 131335361 in words is "one hundred thirty-one million, three hundred thirty-five thousand, three hundred sixty-one".