131786241 has 4 divisors (see below), whose sum is σ = 175714992. Its totient is φ = 87857492.

The previous prime is 131786219. The next prime is 131786257. The reversal of 131786241 is 142687131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131786241 - 2¹⁰ = 131785217 is a prime.

It is a super-2 number, since 2×131786241² = 34735226633820162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131786201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21964371 + ... + 21964376.

It is an arithmetic number, because the mean of its divisors is an integer number (43928748).

Almost surely, 2^131786241 is an apocalyptic number.

It is an amenable number.

131786241 is a deficient number, since it is larger than the sum of its proper divisors (43928751).

131786241 is an equidigital number, since it uses as much as digits as its factorization.

131786241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43928750.

The product of its digits is 8064, while the sum is 33.

The square root of 131786241 is about 11479.8188574559. The cubic root of 131786241 is about 508.8893438778.

The spelling of 131786241 in words is "one hundred thirty-one million, seven hundred eighty-six thousand, two hundred forty-one".