131863643 has 8 divisors (see below), whose sum is σ = 135486960. Its totient is φ = 128286720.

The previous prime is 131863579. The next prime is 131863651. The reversal of 131863643 is 346368131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131863643 - 2⁶ = 131863579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131863673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5798 + ... + 17243.

It is an arithmetic number, because the mean of its divisors is an integer number (16935870).

Almost surely, 2^131863643 is an apocalyptic number.

131863643 is a deficient number, since it is larger than the sum of its proper divisors (3623317).

131863643 is an equidigital number, since it uses as much as digits as its factorization.

131863643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23197.

The product of its digits is 31104, while the sum is 35.

The square root of 131863643 is about 11483.1895830383. The cubic root of 131863643 is about 508.9889530220.

The spelling of 131863643 in words is "one hundred thirty-one million, eight hundred sixty-three thousand, six hundred forty-three".