131533303 has 4 divisors (see below), whose sum is σ = 143490888. Its totient is φ = 119575720.

The previous prime is 131533277. The next prime is 131533309. The reversal of 131533303 is 303335131.

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

It is a de Polignac number, because none of the positive numbers 2^k-131533303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131533309) 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, 5978776 + ... + 5978797.

It is an arithmetic number, because the mean of its divisors is an integer number (35872722).

Almost surely, 2^131533303 is an apocalyptic number.

131533303 is a deficient number, since it is larger than the sum of its proper divisors (11957585).

131533303 is a wasteful number, since it uses less digits than its factorization.

131533303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11957584.

The product of its (nonzero) digits is 1215, while the sum is 22.

The square root of 131533303 is about 11468.7969290593. The cubic root of 131533303 is about 508.5635640666.

Adding to 131533303 its reverse (303335131), we get a palindrome (434868434).

The spelling of 131533303 in words is "one hundred thirty-one million, five hundred thirty-three thousand, three hundred three".