2100231321 has 8 divisors (see below), whose sum is σ = 2800717920. Its totient is φ = 1399949472.

The previous prime is 2100231317. The next prime is 2100231377. The reversal of 2100231321 is 1231320012.

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

It is not a de Polignac number, because 2100231321 - 2² = 2100231317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2100231321.

It is not an unprimeable number, because it can be changed into a prime (2100231311) 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, 25395 + ... + 69608.

It is an arithmetic number, because the mean of its divisors is an integer number (350089740).

Almost surely, 2^2100231321 is an apocalyptic number.

It is an amenable number.

2100231321 is a deficient number, since it is larger than the sum of its proper divisors (700486599).

2100231321 is an equidigital number, since it uses as much as digits as its factorization.

2100231321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102375.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2100231321 is about 45828.2807990874. The cubic root of 2100231321 is about 1280.6261830791.

Adding to 2100231321 its reverse (1231320012), we get a palindrome (3331551333).

The spelling of 2100231321 in words is "two billion, one hundred million, two hundred thirty-one thousand, three hundred twenty-one".