2123113403 has 4 divisors (see below), whose sum is σ = 2196324240. Its totient is φ = 2049902568.

The previous prime is 2123113381. The next prime is 2123113441. The reversal of 2123113403 is 3043113212.

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

It is a cyclic number.

It is not a de Polignac number, because 2123113403 - 2²⁶ = 2056004539 is a prime.

It is a super-2 number, since 2×2123113403² = 9015221043996480818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2123110403) 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, 36605375 + ... + 36605432.

It is an arithmetic number, because the mean of its divisors is an integer number (549081060).

Almost surely, 2^2123113403 is an apocalyptic number.

2123113403 is a deficient number, since it is larger than the sum of its proper divisors (73210837).

2123113403 is an equidigital number, since it uses as much as digits as its factorization.

2123113403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73210836.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 2123113403 is about 46077.2547250810. The cubic root of 2123113403 is about 1285.2602142762.

Adding to 2123113403 its reverse (3043113212), we get a palindrome (5166226615).

The spelling of 2123113403 in words is "two billion, one hundred twenty-three million, one hundred thirteen thousand, four hundred three".