20131231002323 has 48 divisors (see below), whose sum is σ = 24179182241760. Its totient is φ = 16701631833600.

The previous prime is 20131231002307. The next prime is 20131231002343. The reversal of 20131231002323 is 32320013213102.

It is not a de Polignac number, because 20131231002323 - 2⁴ = 20131231002307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20131231002343) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 130119953 + ... + 130274573.

It is an arithmetic number, because the mean of its divisors is an integer number (503732963370).

Almost surely, 2^{20131231002323} is an apocalyptic number.

20131231002323 is a deficient number, since it is larger than the sum of its proper divisors (4047951239437).

20131231002323 is a wasteful number, since it uses less digits than its factorization.

20131231002323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155188 (or 155181 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 20131231002323 its reverse (32320013213102), we get a palindrome (52451244215425).

The spelling of 20131231002323 in words is "twenty trillion, one hundred thirty-one billion, two hundred thirty-one million, two thousand, three hundred twenty-three".