213103021003 has 4 divisors (see below), whose sum is σ = 213193821400. Its totient is φ = 213012220608.

The previous prime is 213103020979. The next prime is 213103021013. The reversal of 213103021003 is 300120301312.

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 213103021003 - 2⁵ = 213103020971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213103021013) 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, 45396678 + ... + 45401371.

It is an arithmetic number, because the mean of its divisors is an integer number (53298455350).

Almost surely, 2^213103021003 is an apocalyptic number.

213103021003 is a deficient number, since it is larger than the sum of its proper divisors (90800397).

213103021003 is an equidigital number, since it uses as much as digits as its factorization.

213103021003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90800396.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 213103021003 its reverse (300120301312), we get a palindrome (513223322315).

The spelling of 213103021003 in words is "two hundred thirteen billion, one hundred three million, twenty-one thousand, three".