131656297 has 2 divisors, whose sum is σ = 131656298. Its totient is φ = 131656296.

The previous prime is 131656271. The next prime is 131656309. The reversal of 131656297 is 792656131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131537961 + 118336 = 11469^2 + 344^2 .

It is an emirp because it is prime and its reverse (792656131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131656297 - 2¹⁹ = 131132009 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131656237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65828148 + 65828149.

It is an arithmetic number, because the mean of its divisors is an integer number (65828149).

Almost surely, 2^131656297 is an apocalyptic number.

It is an amenable number.

131656297 is a deficient number, since it is larger than the sum of its proper divisors (1).

131656297 is an equidigital number, since it uses as much as digits as its factorization.

131656297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 40.

The square root of 131656297 is about 11474.1577904437. The cubic root of 131656297 is about 508.7220303490.

The spelling of 131656297 in words is "one hundred thirty-one million, six hundred fifty-six thousand, two hundred ninety-seven".