100033331 has 4 divisors (see below), whose sum is σ = 100054152. Its totient is φ = 100012512.

The previous prime is 100033327. The next prime is 100033369. The reversal of 100033331 is 133330001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133330001 = 7 ⋅19047143.

It is a cyclic number.

It is not a de Polignac number, because 100033331 - 2² = 100033327 is a prime.

It is a super-2 number, since 2×100033331² = 20013334621911122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100033231) 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, 875 + ... + 14171.

It is an arithmetic number, because the mean of its divisors is an integer number (25013538).

Almost surely, 2^100033331 is an apocalyptic number.

100033331 is a deficient number, since it is larger than the sum of its proper divisors (20821).

100033331 is an equidigital number, since it uses as much as digits as its factorization.

100033331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20820.

The product of its (nonzero) digits is 81, while the sum is 14.

The square root of 100033331 is about 10001.6664111537. Note that the first 3 decimals coincide. The cubic root of 100033331 is about 464.2104472319.

Adding to 100033331 its reverse (133330001), we get a palindrome (233363332).

The spelling of 100033331 in words is "one hundred million, thirty-three thousand, three hundred thirty-one".