21231132003 has 12 divisors (see below), whose sum is σ = 30671166240. Its totient is φ = 14152253136.

The previous prime is 21231131963. The next prime is 21231132047. The reversal of 21231132003 is 30023113212.

It is not a de Polignac number, because 21231132003 - 2¹⁰ = 21231130979 is a prime.

It is a super-2 number, since 2×21231132003² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21231132073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77676 + ... + 220217.

It is an arithmetic number, because the mean of its divisors is an integer number (2555930520).

Almost surely, 2^21231132003 is an apocalyptic number.

21231132003 is a deficient number, since it is larger than the sum of its proper divisors (9440034237).

21231132003 is a wasteful number, since it uses less digits than its factorization.

21231132003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305818 (or 305815 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21231132003 its reverse (30023113212), we get a palindrome (51254245215).

The spelling of 21231132003 in words is "twenty-one billion, two hundred thirty-one million, one hundred thirty-two thousand, three".