131649237229 has 2 divisors, whose sum is σ = 131649237230. Its totient is φ = 131649237228.

The previous prime is 131649237191. The next prime is 131649237253. The reversal of 131649237229 is 922732946131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131649237225 + 4 = 362835^2 + 2^2 .

It is a cyclic number.

It is not a de Polignac number, because 131649237229 - 2⁷ = 131649237101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131649237289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65824618614 + 65824618615.

It is an arithmetic number, because the mean of its divisors is an integer number (65824618615).

Almost surely, 2^131649237229 is an apocalyptic number.

It is an amenable number.

131649237229 is a deficient number, since it is larger than the sum of its proper divisors (1).

131649237229 is an equidigital number, since it uses as much as digits as its factorization.

131649237229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 49.

The spelling of 131649237229 in words is "one hundred thirty-one billion, six hundred forty-nine million, two hundred thirty-seven thousand, two hundred twenty-nine".