133223154 has 16 divisors (see below), whose sum is σ = 266580192. Its totient is φ = 44385408.

The previous prime is 133223147. The next prime is 133223171. The reversal of 133223154 is 451322331.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11277 + ... + 19839.

It is an arithmetic number, because the mean of its divisors is an integer number (16661262).

Almost surely, 2^133223154 is an apocalyptic number.

133223154 is an abundant number, since it is smaller than the sum of its proper divisors (133357038).

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

133223154 is a wasteful number, since it uses less digits than its factorization.

133223154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11161.

The product of its digits is 2160, while the sum is 24.

The square root of 133223154 is about 11542.2334926998. The cubic root of 133223154 is about 510.7321970464.

Adding to 133223154 its reverse (451322331), we get a palindrome (584545485).

The spelling of 133223154 in words is "one hundred thirty-three million, two hundred twenty-three thousand, one hundred fifty-four".