531318226 has 4 divisors (see below), whose sum is σ = 796977342. Its totient is φ = 265659112.

The previous prime is 531318217. The next prime is 531318247. The reversal of 531318226 is 622813135.

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

It can be written as a sum of positive squares in only one way, i.e., 517517001 + 13801225 = 22749^2 + 3715^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132829555 + ... + 132829558.

Almost surely, 2^531318226 is an apocalyptic number.

531318226 is a deficient number, since it is larger than the sum of its proper divisors (265659116).

531318226 is a wasteful number, since it uses less digits than its factorization.

531318226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265659115.

The product of its digits is 8640, while the sum is 31.

The square root of 531318226 is about 23050.3411254584. The cubic root of 531318226 is about 809.9376195419.

The spelling of 531318226 in words is "five hundred thirty-one million, three hundred eighteen thousand, two hundred twenty-six".