131032813 has 2 divisors, whose sum is σ = 131032814. Its totient is φ = 131032812.

The previous prime is 131032751. The next prime is 131032841. The reversal of 131032813 is 318230131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82410084 + 48622729 = 9078^2 + 6973^2 .

It is a cyclic number.

It is not a de Polignac number, because 131032813 - 2⁹ = 131032301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131030813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65516406 + 65516407.

It is an arithmetic number, because the mean of its divisors is an integer number (65516407).

Almost surely, 2^131032813 is an apocalyptic number.

It is an amenable number.

131032813 is a deficient number, since it is larger than the sum of its proper divisors (1).

131032813 is an equidigital number, since it uses as much as digits as its factorization.

131032813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 131032813 is about 11446.9564950689. The cubic root of 131032813 is about 507.9177086307.

Adding to 131032813 its reverse (318230131), we get a palindrome (449262944).

The spelling of 131032813 in words is "one hundred thirty-one million, thirty-two thousand, eight hundred thirteen".