131635769 has 2 divisors, whose sum is σ = 131635770. Its totient is φ = 131635768.

The previous prime is 131635753. The next prime is 131635793. The reversal of 131635769 is 967536131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113145769 + 18490000 = 10637^2 + 4300^2 .

It is a cyclic number.

It is not a de Polignac number, because 131635769 - 2⁴ = 131635753 is a prime.

It is a super-2 number, since 2×131635769² = 34655951360442722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (131635799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65817884 + 65817885.

It is an arithmetic number, because the mean of its divisors is an integer number (65817885).

Almost surely, 2^131635769 is an apocalyptic number.

It is an amenable number.

131635769 is a deficient number, since it is larger than the sum of its proper divisors (1).

131635769 is an equidigital number, since it uses as much as digits as its factorization.

131635769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 102060, while the sum is 41.

The square root of 131635769 is about 11473.2632236866. The cubic root of 131635769 is about 508.6955888016.

The spelling of 131635769 in words is "one hundred thirty-one million, six hundred thirty-five thousand, seven hundred sixty-nine".