133223310 has 96 divisors (see below), whose sum is σ = 388189152. Its totient is φ = 31415040.

The previous prime is 133223263. The next prime is 133223317. The reversal of 133223310 is 13322331.

133223310 is a `hidden beast` number, since 1 + 332 + 2 + 331 + 0 = 666.

It is a super-2 number, since 2×133223310² = 35496900654712200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133223317) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34812 + ... + 38448.

It is an arithmetic number, because the mean of its divisors is an integer number (4043637).

Almost surely, 2^133223310 is an apocalyptic number.

133223310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 133223310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194094576).

133223310 is an abundant number, since it is smaller than the sum of its proper divisors (254965842).

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

133223310 is a wasteful number, since it uses less digits than its factorization.

133223310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3698 (or 3695 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 133223310 is about 11542.2402504886. The cubic root of 133223310 is about 510.7323963966.

Adding to 133223310 its reverse (13322331), we get a palindrome (146545641).

It can be divided in two parts, 1332 and 23310, that added together give a palindrome (24642).

The spelling of 133223310 in words is "one hundred thirty-three million, two hundred twenty-three thousand, three hundred ten".