131281679 has 2 divisors, whose sum is σ = 131281680. Its totient is φ = 131281678.

The previous prime is 131281613. The next prime is 131281687. The reversal of 131281679 is 976182131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131281679 - 2¹⁶ = 131216143 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131280679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65640839 + 65640840.

It is an arithmetic number, because the mean of its divisors is an integer number (65640840).

Almost surely, 2^131281679 is an apocalyptic number.

131281679 is a deficient number, since it is larger than the sum of its proper divisors (1).

131281679 is an equidigital number, since it uses as much as digits as its factorization.

131281679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 38.

The square root of 131281679 is about 11457.8217388821. The cubic root of 131281679 is about 508.2390620011.

The spelling of 131281679 in words is "one hundred thirty-one million, two hundred eighty-one thousand, six hundred seventy-nine".