2113123203 has 12 divisors (see below), whose sum is σ = 3058887520. Its totient is φ = 1405703376.

The previous prime is 2113123147. The next prime is 2113123241. The reversal of 2113123203 is 3023213112.

It is not a de Polignac number, because 2113123203 - 2²⁴ = 2096345987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2113123283) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 249388 + ... + 257721.

Almost surely, 2^2113123203 is an apocalyptic number.

2113123203 is a deficient number, since it is larger than the sum of its proper divisors (945764317).

2113123203 is a wasteful number, since it uses less digits than its factorization.

2113123203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507578 (or 507575 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2113123203 is about 45968.7198320771. The cubic root of 2113123203 is about 1283.2411356414.

Adding to 2113123203 its reverse (3023213112), we get a palindrome (5136336315).

It can be divided in two parts, 2113 and 123203, that added together give a square (125316 = 354²).

The spelling of 2113123203 in words is "two billion, one hundred thirteen million, one hundred twenty-three thousand, two hundred three".