131518033 has 2 divisors, whose sum is σ = 131518034. Its totient is φ = 131518032.

The previous prime is 131518007. The next prime is 131518063. The reversal of 131518033 is 330815131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123032464 + 8485569 = 11092^2 + 2913^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131518033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131517989 and 131518007.

It is not a weakly prime, because it can be changed into another prime (131518003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65759016 + 65759017.

It is an arithmetic number, because the mean of its divisors is an integer number (65759017).

Almost surely, 2^131518033 is an apocalyptic number.

It is an amenable number.

131518033 is a deficient number, since it is larger than the sum of its proper divisors (1).

131518033 is an equidigital number, since it uses as much as digits as its factorization.

131518033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 131518033 is about 11468.1311903902. The cubic root of 131518033 is about 508.5438832051.

The spelling of 131518033 in words is "one hundred thirty-one million, five hundred eighteen thousand, thirty-three".