100231020133 has 4 divisors (see below), whose sum is σ = 100243202668. Its totient is φ = 100218837600.

The previous prime is 100231020089. The next prime is 100231020181. The reversal of 100231020133 is 331020132001.

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

It can be written as a sum of positive squares in 2 ways, for example, as 63452602404 + 36778417729 = 251898^2 + 191777^2 .

It is a cyclic number.

It is not a de Polignac number, because 100231020133 - 2³³ = 91641085541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100231020733) 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, 6078918 + ... + 6095383.

It is an arithmetic number, because the mean of its divisors is an integer number (25060800667).

Almost surely, 2^100231020133 is an apocalyptic number.

It is an amenable number.

100231020133 is a deficient number, since it is larger than the sum of its proper divisors (12182535).

100231020133 is an equidigital number, since it uses as much as digits as its factorization.

100231020133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12182534.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 100231020133 its reverse (331020132001), we get a palindrome (431251152134).

The spelling of 100231020133 in words is "one hundred billion, two hundred thirty-one million, twenty thousand, one hundred thirty-three".