133223340 has 24 divisors (see below), whose sum is σ = 373025520. Its totient is φ = 35526208.

The previous prime is 133223317. The next prime is 133223341. The reversal of 133223340 is 43322331.

It is not an unprimeable number, because it can be changed into a prime (133223341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1110135 + ... + 1110254.

It is an arithmetic number, because the mean of its divisors is an integer number (15542730).

Almost surely, 2^133223340 is an apocalyptic number.

133223340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133223340 is an abundant number, since it is smaller than the sum of its proper divisors (239802180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133223340 is a wasteful number, since it uses less digits than its factorization.

133223340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2220401 (or 2220399 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 133223340 is about 11542.2415500630. The cubic root of 133223340 is about 510.7324347332.

Adding to 133223340 its reverse (43322331), we get a palindrome (176545671).

The spelling of 133223340 in words is "one hundred thirty-three million, two hundred twenty-three thousand, three hundred forty".