100305133 has 4 divisors (see below), whose sum is σ = 102005280. Its totient is φ = 98604988.

The previous prime is 100305109. The next prime is 100305143. The reversal of 100305133 is 331503001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 331503001 = 73 ⋅4541137.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100305133 is a prime.

It is a super-2 number, since 2×100305133² = 20122239412295378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100305143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 849985 + ... + 850102.

It is an arithmetic number, because the mean of its divisors is an integer number (25501320).

Almost surely, 2^100305133 is an apocalyptic number.

It is an amenable number.

100305133 is a deficient number, since it is larger than the sum of its proper divisors (1700147).

100305133 is an equidigital number, since it uses as much as digits as its factorization.

100305133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700146.

The product of its (nonzero) digits is 135, while the sum is 16.

The square root of 100305133 is about 10015.2450294538. The cubic root of 100305133 is about 464.6305046372.

Adding to 100305133 its reverse (331503001), we get a palindrome (431808134).

The spelling of 100305133 in words is "one hundred million, three hundred five thousand, one hundred thirty-three".