21301311003 has 8 divisors (see below), whose sum is σ = 32459140608. Its totient is φ = 12172177704.

The previous prime is 21301310993. The next prime is 21301311019. The reversal of 21301311003 is 30011310312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21301311003 - 2⁸ = 21301310747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21301312003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 507174051 + ... + 507174092.

It is an arithmetic number, because the mean of its divisors is an integer number (4057392576).

Almost surely, 2^21301311003 is an apocalyptic number.

21301311003 is a deficient number, since it is larger than the sum of its proper divisors (11157829605).

21301311003 is a wasteful number, since it uses less digits than its factorization.

21301311003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014348153.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 21301311003 its reverse (30011310312), we get a palindrome (51312621315).

The spelling of 21301311003 in words is "twenty-one billion, three hundred one million, three hundred eleven thousand, three".