133213226 has 8 divisors (see below), whose sum is σ = 204466944. Its totient is φ = 65057580.

The previous prime is 133213189. The next prime is 133213229. The reversal of 133213226 is 622312331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (133213229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 774410 + ... + 774581.

It is an arithmetic number, because the mean of its divisors is an integer number (25558368).

Almost surely, 2^133213226 is an apocalyptic number.

133213226 is a deficient number, since it is larger than the sum of its proper divisors (71253718).

133213226 is a wasteful number, since it uses less digits than its factorization.

133213226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1549036.

The product of its digits is 1296, while the sum is 23.

The square root of 133213226 is about 11541.8034119456. The cubic root of 133213226 is about 510.7195098744.

Adding to 133213226 its reverse (622312331), we get a palindrome (755525557).

The spelling of 133213226 in words is "one hundred thirty-three million, two hundred thirteen thousand, two hundred twenty-six".