21031113230003 has 4 divisors (see below), whose sum is σ = 21031170160968. Its totient is φ = 21031056299040.

The previous prime is 21031113229949. The next prime is 21031113230069. The reversal of 21031113230003 is 30003231113012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21031113230003 - 2¹² = 21031113225907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21031113230503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27907718 + ... + 28651403.

It is an arithmetic number, because the mean of its divisors is an integer number (5257792540242).

Almost surely, 2^{21031113230003} is an apocalyptic number.

21031113230003 is a deficient number, since it is larger than the sum of its proper divisors (56930965).

21031113230003 is an equidigital number, since it uses as much as digits as its factorization.

21031113230003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56930964.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 21031113230003 its reverse (30003231113012), we get a palindrome (51034344343015).

The spelling of 21031113230003 in words is "twenty-one trillion, thirty-one billion, one hundred thirteen million, two hundred thirty thousand, three".