131663733 has 8 divisors (see below), whose sum is σ = 175605696. Its totient is φ = 87748800.

The previous prime is 131663717. The next prime is 131663783. The reversal of 131663733 is 337366131.

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

It is not a de Polignac number, because 131663733 - 2⁴ = 131663717 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 131663694 and 131663703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131663783) 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, 12253 + ... + 20333.

It is an arithmetic number, because the mean of its divisors is an integer number (21950712).

Almost surely, 2^131663733 is an apocalyptic number.

It is an amenable number.

131663733 is a deficient number, since it is larger than the sum of its proper divisors (43941963).

131663733 is an equidigital number, since it uses as much as digits as its factorization.

131663733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13515.

The product of its digits is 20412, while the sum is 33.

The square root of 131663733 is about 11474.4818183655. The cubic root of 131663733 is about 508.7316077762.

The spelling of 131663733 in words is "one hundred thirty-one million, six hundred sixty-three thousand, seven hundred thirty-three".