133227418 has 4 divisors (see below), whose sum is σ = 199841130. Its totient is φ = 66613708.

The previous prime is 133227407. The next prime is 133227427. The reversal of 133227418 is 814722331.

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., 74597769 + 58629649 = 8637^2 + 7657^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 133227418.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33306853 + ... + 33306856.

Almost surely, 2^133227418 is an apocalyptic number.

133227418 is a deficient number, since it is larger than the sum of its proper divisors (66613712).

133227418 is an equidigital number, since it uses as much as digits as its factorization.

133227418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66613711.

The product of its digits is 8064, while the sum is 31.

The square root of 133227418 is about 11542.4182041719. The cubic root of 133227418 is about 510.7376458962.

Adding to 133227418 its reverse (814722331), we get a palindrome (947949749).

The spelling of 133227418 in words is "one hundred thirty-three million, two hundred twenty-seven thousand, four hundred eighteen".