131440333 has 4 divisors (see below), whose sum is σ = 131544540. Its totient is φ = 131336128.

The previous prime is 131440327. The next prime is 131440339. The reversal of 131440333 is 333044131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (131440327) and next prime (131440339).

It can be written as a sum of positive squares in 2 ways, for example, as 112933129 + 18507204 = 10627^2 + 4302^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131440333 is a prime.

It is a super-2 number, since 2×131440333² = 34553122278301778, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131440339) 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, 50188 + ... + 52741.

It is an arithmetic number, because the mean of its divisors is an integer number (32886135).

Almost surely, 2^131440333 is an apocalyptic number.

It is an amenable number.

131440333 is a deficient number, since it is larger than the sum of its proper divisors (104207).

131440333 is a wasteful number, since it uses less digits than its factorization.

131440333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104206.

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 131440333 is about 11464.7430411676. The cubic root of 131440333 is about 508.4437153348.

Adding to 131440333 its reverse (333044131), we get a palindrome (464484464).

The spelling of 131440333 in words is "one hundred thirty-one million, four hundred forty thousand, three hundred thirty-three".