20131323003 has 24 divisors (see below), whose sum is σ = 31854850560. Its totient is φ = 12149738160.

The previous prime is 20131323001. The next prime is 20131323059. The reversal of 20131323003 is 30032313102.

It is not a de Polignac number, because 20131323003 - 2¹ = 20131323001 is a prime.

It is a super-2 number, since 2×20131323003² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20131323001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 401751 + ... + 449072.

It is an arithmetic number, because the mean of its divisors is an integer number (1327285440).

Almost surely, 2^20131323003 is an apocalyptic number.

20131323003 is a deficient number, since it is larger than the sum of its proper divisors (11723527557).

20131323003 is a wasteful number, since it uses less digits than its factorization.

20131323003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851079 (or 851076 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 20131323003 its reverse (30032313102), we get a palindrome (50163636105).

Subtracting 20131323003 from its reverse (30032313102), we obtain a palindrome (9900990099).

The spelling of 20131323003 in words is "twenty billion, one hundred thirty-one million, three hundred twenty-three thousand, three".