2013103231 has 4 divisors (see below), whose sum is σ = 2013206832. Its totient is φ = 2012999632.

The previous prime is 2013103207. The next prime is 2013103277. The reversal of 2013103231 is 1323013102.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2013103231 is a prime.

It is a super-2 number, since 2×2013103231² = 8105169237325278722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2013103831) 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, 12931 + ... + 64756.

It is an arithmetic number, because the mean of its divisors is an integer number (503301708).

Almost surely, 2^2013103231 is an apocalyptic number.

2013103231 is a deficient number, since it is larger than the sum of its proper divisors (103601).

2013103231 is an equidigital number, since it uses as much as digits as its factorization.

2013103231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103600.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 2013103231 is about 44867.6189584426. The cubic root of 2013103231 is about 1262.6665688275. Note that the first 3 decimals are identical.

Adding to 2013103231 its reverse (1323013102), we get a palindrome (3336116333).

The spelling of 2013103231 in words is "two billion, thirteen million, one hundred three thousand, two hundred thirty-one".