131013229 has 2 divisors, whose sum is σ = 131013230. Its totient is φ = 131013228.

The previous prime is 131013149. The next prime is 131013241. The reversal of 131013229 is 922310131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91298025 + 39715204 = 9555^2 + 6302^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131013229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131013629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65506614 + 65506615.

It is an arithmetic number, because the mean of its divisors is an integer number (65506615).

Almost surely, 2^131013229 is an apocalyptic number.

It is an amenable number.

131013229 is a deficient number, since it is larger than the sum of its proper divisors (1).

131013229 is an equidigital number, since it uses as much as digits as its factorization.

131013229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 131013229 is about 11446.1010392186. The cubic root of 131013229 is about 507.8924031219.

The spelling of 131013229 in words is "one hundred thirty-one million, thirteen thousand, two hundred twenty-nine".