131863705 has 16 divisors (see below), whose sum is σ = 169058880. Its totient is φ = 98442432.

The previous prime is 131863703. The next prime is 131863759. The reversal of 131863705 is 507368131.

It is a cyclic number.

It is not a de Polignac number, because 131863705 - 2¹ = 131863703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131863703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3994 + ... + 16723.

It is an arithmetic number, because the mean of its divisors is an integer number (10566180).

Almost surely, 2^131863705 is an apocalyptic number.

It is an amenable number.

131863705 is a deficient number, since it is larger than the sum of its proper divisors (37195175).

131863705 is a wasteful number, since it uses less digits than its factorization.

131863705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20808.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 131863705 is about 11483.1922826364. The cubic root of 131863705 is about 508.9890327945.

The spelling of 131863705 in words is "one hundred thirty-one million, eight hundred sixty-three thousand, seven hundred five".