21233013131003 has 4 divisors (see below), whose sum is σ = 21271830340200. Its totient is φ = 21194195921808.

The previous prime is 21233013130999. The next prime is 21233013131051. The reversal of 21233013131003 is 30013131033212.

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 21233013131003 - 2² = 21233013130999 is a prime.

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 21233013131003.

It is not an unprimeable number, because it can be changed into a prime (21233013131503) 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, 19408603778 + ... + 19408604871.

It is an arithmetic number, because the mean of its divisors is an integer number (5317957585050).

Almost surely, 2^{21233013131003} is an apocalyptic number.

21233013131003 is a deficient number, since it is larger than the sum of its proper divisors (38817209197).

21233013131003 is an equidigital number, since it uses as much as digits as its factorization.

21233013131003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38817209196.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 21233013131003 its reverse (30013131033212), we get a palindrome (51246144164215).

The spelling of 21233013131003 in words is "twenty-one trillion, two hundred thirty-three billion, thirteen million, one hundred thirty-one thousand, three".