21131132003 has 2 divisors, whose sum is σ = 21131132004. Its totient is φ = 21131132002.

The previous prime is 21131131997. The next prime is 21131132021. The reversal of 21131132003 is 30023113112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21131132003 - 2³² = 16836164707 is a prime.

It is not a weakly prime, because it can be changed into another prime (21131132023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10565566001 + 10565566002.

It is an arithmetic number, because the mean of its divisors is an integer number (10565566002).

Almost surely, 2^21131132003 is an apocalyptic number.

21131132003 is a deficient number, since it is larger than the sum of its proper divisors (1).

21131132003 is an equidigital number, since it uses as much as digits as its factorization.

21131132003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21131132003 its reverse (30023113112), we get a palindrome (51154245115).

The spelling of 21131132003 in words is "twenty-one billion, one hundred thirty-one million, one hundred thirty-two thousand, three".