21023231003 has 2 divisors, whose sum is σ = 21023231004. Its totient is φ = 21023231002.

The previous prime is 21023230997. The next prime is 21023231039. The reversal of 21023231003 is 30013232012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21023231003 - 2²² = 21019036699 is a prime.

It is not a weakly prime, because it can be changed into another prime (21023231063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511615501 + 10511615502.

It is an arithmetic number, because the mean of its divisors is an integer number (10511615502).

Almost surely, 2^21023231003 is an apocalyptic number.

21023231003 is a deficient number, since it is larger than the sum of its proper divisors (1).

21023231003 is an equidigital number, since it uses as much as digits as its factorization.

21023231003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21023231003 its reverse (30013232012), we get a palindrome (51036463015).

The spelling of 21023231003 in words is "twenty-one billion, twenty-three million, two hundred thirty-one thousand, three".