518232133 has 2 divisors, whose sum is σ = 518232134. Its totient is φ = 518232132.

The previous prime is 518232109. The next prime is 518232139. The reversal of 518232133 is 331232815.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 352801089 + 165431044 = 18783^2 + 12862^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-518232133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (518232139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259116066 + 259116067.

It is an arithmetic number, because the mean of its divisors is an integer number (259116067).

Almost surely, 2^518232133 is an apocalyptic number.

It is an amenable number.

518232133 is a deficient number, since it is larger than the sum of its proper divisors (1).

518232133 is an equidigital number, since it uses as much as digits as its factorization.

518232133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 28.

The square root of 518232133 is about 22764.7124515114. The cubic root of 518232133 is about 803.2328210917.

Adding to 518232133 its reverse (331232815), we get a palindrome (849464948).

It can be divided in two parts, 51823 and 2133, that added together give a triangular number (53956 = T₃₂₈).

The spelling of 518232133 in words is "five hundred eighteen million, two hundred thirty-two thousand, one hundred thirty-three".