2100320403 has 16 divisors (see below), whose sum is σ = 2966474016. Its totient is φ = 1317263360.

The previous prime is 2100320399. The next prime is 2100320413. The reversal of 2100320403 is 3040230012.

It is not a de Polignac number, because 2100320403 - 2² = 2100320399 is a prime.

It is a super-2 number, since 2×2100320403² = 8822691590516164818, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2100320413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126463 + ... + 142103.

It is an arithmetic number, because the mean of its divisors is an integer number (185404626).

Almost surely, 2^2100320403 is an apocalyptic number.

2100320403 is a deficient number, since it is larger than the sum of its proper divisors (866153613).

2100320403 is a wasteful number, since it uses less digits than its factorization.

2100320403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18294.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 2100320403 is about 45829.2526995586. The cubic root of 2100320403 is about 1280.6442888829.

Adding to 2100320403 its reverse (3040230012), we get a palindrome (5140550415).

The spelling of 2100320403 in words is "two billion, one hundred million, three hundred twenty thousand, four hundred three".