538623313 has 2 divisors, whose sum is σ = 538623314. Its totient is φ = 538623312.

The previous prime is 538623311. The next prime is 538623317. The reversal of 538623313 is 313326835.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 505710144 + 32913169 = 22488^2 + 5737^2 .

It is a cyclic number.

It is not a de Polignac number, because 538623313 - 2¹ = 538623311 is a prime.

Together with 538623311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (538623311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269311656 + 269311657.

It is an arithmetic number, because the mean of its divisors is an integer number (269311657).

Almost surely, 2^538623313 is an apocalyptic number.

It is an amenable number.

538623313 is a deficient number, since it is larger than the sum of its proper divisors (1).

538623313 is an equidigital number, since it uses as much as digits as its factorization.

538623313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 34.

The square root of 538623313 is about 23208.2595857595. The cubic root of 538623313 is about 813.6326769050.

It can be divided in two parts, 53862 and 3313, that added together give a palindrome (57175).

The spelling of 538623313 in words is "five hundred thirty-eight million, six hundred twenty-three thousand, three hundred thirteen".