131385647 has 2 divisors, whose sum is σ = 131385648. Its totient is φ = 131385646.

The previous prime is 131385641. The next prime is 131385649. The reversal of 131385647 is 746583131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131385647 - 2⁸ = 131385391 is a prime.

Together with 131385649, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131385647.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131385641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65692823 + 65692824.

It is an arithmetic number, because the mean of its divisors is an integer number (65692824).

Almost surely, 2^131385647 is an apocalyptic number.

131385647 is a deficient number, since it is larger than the sum of its proper divisors (1).

131385647 is an equidigital number, since it uses as much as digits as its factorization.

131385647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 38.

The square root of 131385647 is about 11462.3578289984. The cubic root of 131385647 is about 508.3731925626.

The spelling of 131385647 in words is "one hundred thirty-one million, three hundred eighty-five thousand, six hundred forty-seven".