131753861 has 2 divisors, whose sum is σ = 131753862. Its totient is φ = 131753860.

The previous prime is 131753837. The next prime is 131753863. The reversal of 131753861 is 168357131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130530625 + 1223236 = 11425^2 + 1106^2 .

It is a cyclic number.

It is not a de Polignac number, because 131753861 - 2¹⁰ = 131752837 is a prime.

Together with 131753863, 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 (131753863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65876930 + 65876931.

It is an arithmetic number, because the mean of its divisors is an integer number (65876931).

Almost surely, 2^131753861 is an apocalyptic number.

It is an amenable number.

131753861 is a deficient number, since it is larger than the sum of its proper divisors (1).

131753861 is an equidigital number, since it uses as much as digits as its factorization.

131753861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 35.

The square root of 131753861 is about 11478.4084698185. The cubic root of 131753861 is about 508.8476622714.

The spelling of 131753861 in words is "one hundred thirty-one million, seven hundred fifty-three thousand, eight hundred sixty-one".