100243431231 has 8 divisors (see below), whose sum is σ = 133691787264. Its totient is φ = 66812014680.

The previous prime is 100243431209. The next prime is 100243431257. The reversal of 100243431231 is 132134342001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 100243431231 - 2²⁵ = 100209876799 is a prime.

It is a super-2 number, since 2×100243431231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100203431231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4221055 + ... + 4244736.

It is an arithmetic number, because the mean of its divisors is an integer number (16711473408).

Almost surely, 2^100243431231 is an apocalyptic number.

100243431231 is a deficient number, since it is larger than the sum of its proper divisors (33448356033).

100243431231 is an equidigital number, since it uses as much as digits as its factorization.

100243431231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8469741.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 100243431231 its reverse (132134342001), we get a palindrome (232377773232).

The spelling of 100243431231 in words is "one hundred billion, two hundred forty-three million, four hundred thirty-one thousand, two hundred thirty-one".