100133231 has 4 divisors (see below), whose sum is σ = 109236264. Its totient is φ = 91030200.

The previous prime is 100133221. The next prime is 100133261. The reversal of 100133231 is 132331001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100133231 - 2⁶ = 100133167 is a prime.

It is a super-2 number, since 2×100133231² = 20053327900998722, 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 (100133221) 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, 4551500 + ... + 4551521.

It is an arithmetic number, because the mean of its divisors is an integer number (27309066).

Almost surely, 2^100133231 is an apocalyptic number.

100133231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

100133231 is a deficient number, since it is larger than the sum of its proper divisors (9103033).

100133231 is an equidigital number, since it uses as much as digits as its factorization.

100133231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9103032.

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

The square root of 100133231 is about 10006.6593326644. The cubic root of 100133231 is about 464.3649263913.

Adding to 100133231 its reverse (132331001), we get a palindrome (232464232).

It can be divided in two parts, 100 and 133231, that added together give a palindrome (133331).

The spelling of 100133231 in words is "one hundred million, one hundred thirty-three thousand, two hundred thirty-one".