133001100 has 54 divisors (see below), whose sum is σ = 416887380. Its totient is φ = 35466720.

The previous prime is 133001093. The next prime is 133001101. The reversal of 133001100 is 1100331.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (133001101) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 72990 + ... + 74789.

Almost surely, 2^133001100 is an apocalyptic number.

133001100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133001100 is an abundant number, since it is smaller than the sum of its proper divisors (283886280).

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

133001100 is a wasteful number, since it uses less digits than its factorization.

133001100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147799 (or 147789 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 9.

The square root of 133001100 is about 11532.6102856205. The cubic root of 133001100 is about 510.4482794433.

Adding to 133001100 its reverse (1100331), we get a palindrome (134101431).

It can be divided in two parts, 13300 and 1100, that added together give a square (14400 = 120²).

The spelling of 133001100 in words is "one hundred thirty-three million, one thousand, one hundred".