2100031321 has 8 divisors (see below), whose sum is σ = 2119622400. Its totient is φ = 2080504560.

The previous prime is 2100031277. The next prime is 2100031331. The reversal of 2100031321 is 1231300012.

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

It is a cyclic number.

It is not a de Polignac number, because 2100031321 - 2¹¹ = 2100029273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2100031331) 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, 50811 + ... + 82351.

It is an arithmetic number, because the mean of its divisors is an integer number (264952800).

Almost surely, 2^2100031321 is an apocalyptic number.

It is an amenable number.

2100031321 is a deficient number, since it is larger than the sum of its proper divisors (19591079).

2100031321 is a wasteful number, since it uses less digits than its factorization.

2100031321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32159.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 2100031321 is about 45826.0986884112. The cubic root of 2100031321 is about 1280.5855314670.

Adding to 2100031321 its reverse (1231300012), we get a palindrome (3331331333).

The spelling of 2100031321 in words is "two billion, one hundred million, thirty-one thousand, three hundred twenty-one".