2103313231 has 4 divisors (see below), whose sum is σ = 2122970472. Its totient is φ = 2083655992.

The previous prime is 2103313217. The next prime is 2103313271. The reversal of 2103313231 is 1323133012.

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 2103313231 - 2¹¹ = 2103311183 is a prime.

It is a super-2 number, since 2×2103313231² = 8847853095399318722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2103313199 and 2103313208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103313271) 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, 9828460 + ... + 9828673.

It is an arithmetic number, because the mean of its divisors is an integer number (530742618).

Almost surely, 2^2103313231 is an apocalyptic number.

2103313231 is a deficient number, since it is larger than the sum of its proper divisors (19657241).

2103313231 is a wasteful number, since it uses less digits than its factorization.

2103313231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19657240.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 2103313231 is about 45861.8930158798. The cubic root of 2103313231 is about 1281.2522800959.

Adding to 2103313231 its reverse (1323133012), we get a palindrome (3426446243).

The spelling of 2103313231 in words is "two billion, one hundred three million, three hundred thirteen thousand, two hundred thirty-one".