131856737 has 8 divisors (see below), whose sum is σ = 134232000. Its totient is φ = 129493584.

The previous prime is 131856701. The next prime is 131856749. The reversal of 131856737 is 737658131.

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 131856737 - 2¹⁴ = 131840353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131856694 and 131856703.

It is not an unprimeable number, because it can be changed into a prime (131856757) 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, 20564 + ... + 26202.

It is an arithmetic number, because the mean of its divisors is an integer number (16779000).

Almost surely, 2^131856737 is an apocalyptic number.

It is an amenable number.

131856737 is a deficient number, since it is larger than the sum of its proper divisors (2375263).

131856737 is an equidigital number, since it uses as much as digits as its factorization.

131856737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6055.

The product of its digits is 105840, while the sum is 41.

The square root of 131856737 is about 11482.8888786751. Note that the first 4 decimals coincide. The cubic root of 131856737 is about 508.9800672290.

The spelling of 131856737 in words is "one hundred thirty-one million, eight hundred fifty-six thousand, seven hundred thirty-seven".