131261147 has 2 divisors, whose sum is σ = 131261148. Its totient is φ = 131261146.

The previous prime is 131261111. The next prime is 131261149. The reversal of 131261147 is 741162131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131261147 is a prime.

Together with 131261149, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131261149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65630573 + 65630574.

It is an arithmetic number, because the mean of its divisors is an integer number (65630574).

Almost surely, 2^131261147 is an apocalyptic number.

131261147 is a deficient number, since it is larger than the sum of its proper divisors (1).

131261147 is an equidigital number, since it uses as much as digits as its factorization.

131261147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 26.

The square root of 131261147 is about 11456.9257220251. The cubic root of 131261147 is about 508.2125650099.

The spelling of 131261147 in words is "one hundred thirty-one million, two hundred sixty-one thousand, one hundred forty-seven".