100013231 has 4 divisors (see below), whose sum is σ = 100450200. Its totient is φ = 99576264.

The previous prime is 100013213. The next prime is 100013237. The reversal of 100013231 is 132310001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132310001 = 547 ⋅241883.

It is a cyclic number.

It is not a de Polignac number, because 100013231 - 2⁶ = 100013167 is a prime.

It is a super-2 number, since 2×100013231² = 20005292750118722, 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 (100013237) 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, 218141 + ... + 218598.

It is an arithmetic number, because the mean of its divisors is an integer number (25112550).

Almost surely, 2^100013231 is an apocalyptic number.

100013231 is a deficient number, since it is larger than the sum of its proper divisors (436969).

100013231 is an equidigital number, since it uses as much as digits as its factorization.

100013231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436968.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 100013231 is about 10000.6615281190. The cubic root of 100013231 is about 464.1793534125.

Adding to 100013231 its reverse (132310001), we get a palindrome (232323232).

It can be divided in two parts, 100013 and 231, that multiplied together give a triangular number (23103003 = T₆₇₉₇).

The spelling of 100013231 in words is "one hundred million, thirteen thousand, two hundred thirty-one".