131333413 has 2 divisors, whose sum is σ = 131333414. Its totient is φ = 131333412.

The previous prime is 131333407. The next prime is 131333437. The reversal of 131333413 is 314333131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124947684 + 6385729 = 11178^2 + 2527^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131333413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131333443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65666706 + 65666707.

It is an arithmetic number, because the mean of its divisors is an integer number (65666707).

Almost surely, 2^131333413 is an apocalyptic number.

It is an amenable number.

131333413 is a deficient number, since it is larger than the sum of its proper divisors (1).

131333413 is an equidigital number, since it uses as much as digits as its factorization.

131333413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 972, while the sum is 22.

The square root of 131333413 is about 11460.0791009486. The cubic root of 131333413 is about 508.3058136017.

Adding to 131333413 its reverse (314333131), we get a palindrome (445666544).

The spelling of 131333413 in words is "one hundred thirty-one million, three hundred thirty-three thousand, four hundred thirteen".