133331112 has 24 divisors (see below), whose sum is σ = 361105290. Its totient is φ = 44443680.

The previous prime is 133331083. The next prime is 133331129. The reversal of 133331112 is 211133331.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 107868996 + 25462116 = 10386^2 + 5046^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 925839 + ... + 925982.

Almost surely, 2^133331112 is an apocalyptic number.

133331112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133331112 is an abundant number, since it is smaller than the sum of its proper divisors (227774178).

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

133331112 is a wasteful number, since it uses less digits than its factorization.

133331112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851833 (or 1851826 counting only the distinct ones).

The product of its digits is 162, while the sum is 18.

The square root of 133331112 is about 11546.9091968370. The cubic root of 133331112 is about 510.8701178655.

Adding to 133331112 its reverse (211133331), we get a palindrome (344464443).

The spelling of 133331112 in words is "one hundred thirty-three million, three hundred thirty-one thousand, one hundred twelve".