133312100 has 18 divisors (see below), whose sum is σ = 289287474. Its totient is φ = 53324800.

The previous prime is 133312099. The next prime is 133312103. The reversal of 133312100 is 1213331.

It can be written as a sum of positive squares in 3 ways, for example, as 417316 + 132894784 = 646^2 + 11528^2 .

It is not an unprimeable number, because it can be changed into a prime (133312103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 666461 + ... + 666660.

Almost surely, 2^133312100 is an apocalyptic number.

133312100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133312100 is an abundant number, since it is smaller than the sum of its proper divisors (155975374).

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

133312100 is a wasteful number, since it uses less digits than its factorization.

133312100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333135 (or 1333128 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 133312100 is about 11546.0859168811. The cubic root of 133312100 is about 510.8458346500.

Adding to 133312100 its reverse (1213331), we get a palindrome (134525431).

The spelling of 133312100 in words is "one hundred thirty-three million, three hundred twelve thousand, one hundred".