21313332003 has 16 divisors (see below), whose sum is σ = 29037312000. Its totient is φ = 13899430656.

The previous prime is 21313331957. The next prime is 21313332013. The reversal of 21313332003 is 30023331312.

It is not a de Polignac number, because 21313332003 - 2²² = 21309137699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21313332013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244051 + ... + 319667.

It is an arithmetic number, because the mean of its divisors is an integer number (1814832000).

Almost surely, 2^21313332003 is an apocalyptic number.

21313332003 is a deficient number, since it is larger than the sum of its proper divisors (7723979997).

21313332003 is a wasteful number, since it uses less digits than its factorization.

21313332003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77666.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 21313332003 its reverse (30023331312), we get a palindrome (51336663315).

The spelling of 21313332003 in words is "twenty-one billion, three hundred thirteen million, three hundred thirty-two thousand, three".