131440233 has 8 divisors (see below), whose sum is σ = 184477600. Its totient is φ = 83014848.

The previous prime is 131440213. The next prime is 131440249. The reversal of 131440233 is 332044131.

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

It is not a de Polignac number, because 131440233 - 2²² = 127245929 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131440213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1152928 + ... + 1153041.

It is an arithmetic number, because the mean of its divisors is an integer number (23059700).

Almost surely, 2^131440233 is an apocalyptic number.

It is an amenable number.

131440233 is a deficient number, since it is larger than the sum of its proper divisors (53037367).

131440233 is a wasteful number, since it uses less digits than its factorization.

131440233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2305991.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 131440233 is about 11464.7386799700. The cubic root of 131440233 is about 508.4435863932.

Adding to 131440233 its reverse (332044131), we get a palindrome (463484364).

The spelling of 131440233 in words is "one hundred thirty-one million, four hundred forty thousand, two hundred thirty-three".