131979737 has 2 divisors, whose sum is σ = 131979738. Its totient is φ = 131979736.

The previous prime is 131979689. The next prime is 131979761. The reversal of 131979737 is 737979131.

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., 120582361 + 11397376 = 10981^2 + 3376^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131979737 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 131979691 and 131979700.

It is not a weakly prime, because it can be changed into another prime (131979767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65989868 + 65989869.

It is an arithmetic number, because the mean of its divisors is an integer number (65989869).

Almost surely, 2^131979737 is an apocalyptic number.

It is an amenable number.

131979737 is a deficient number, since it is larger than the sum of its proper divisors (1).

131979737 is an equidigital number, since it uses as much as digits as its factorization.

131979737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 250047, while the sum is 47.

The square root of 131979737 is about 11488.2434253458. The cubic root of 131979737 is about 509.1382821050.

The spelling of 131979737 in words is "one hundred thirty-one million, nine hundred seventy-nine thousand, seven hundred thirty-seven".