131436629 has 2 divisors, whose sum is σ = 131436630. Its totient is φ = 131436628.

The previous prime is 131436607. The next prime is 131436631. The reversal of 131436629 is 926634131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97970404 + 33466225 = 9898^2 + 5785^2 .

It is an emirp because it is prime and its reverse (926634131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131436629 is a prime.

Together with 131436631, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131436229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65718314 + 65718315.

It is an arithmetic number, because the mean of its divisors is an integer number (65718315).

Almost surely, 2^131436629 is an apocalyptic number.

It is an amenable number.

131436629 is a deficient number, since it is larger than the sum of its proper divisors (1).

131436629 is an equidigital number, since it uses as much as digits as its factorization.

131436629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 35.

The square root of 131436629 is about 11464.5815013022. The cubic root of 131436629 is about 508.4389392939.

The spelling of 131436629 in words is "one hundred thirty-one million, four hundred thirty-six thousand, six hundred twenty-nine".