2231123403 has 4 divisors (see below), whose sum is σ = 2974831208. Its totient is φ = 1487415600.

The previous prime is 2231123371. The next prime is 2231123429. The reversal of 2231123403 is 3043211322.

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

It is not a de Polignac number, because 2231123403 - 2⁵ = 2231123371 is a prime.

It is a super-3 number, since 3×2231123403³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2231123403.

It is not an unprimeable number, because it can be changed into a prime (2231123443) 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, 371853898 + ... + 371853903.

It is an arithmetic number, because the mean of its divisors is an integer number (743707802).

Almost surely, 2^2231123403 is an apocalyptic number.

2231123403 is a deficient number, since it is larger than the sum of its proper divisors (743707805).

2231123403 is an equidigital number, since it uses as much as digits as its factorization.

2231123403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743707804.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 2231123403 is about 47234.7690054688. The cubic root of 2231123403 is about 1306.6959064402.

Adding to 2231123403 its reverse (3043211322), we get a palindrome (5274334725).

The spelling of 2231123403 in words is "two billion, two hundred thirty-one million, one hundred twenty-three thousand, four hundred three".