21303103031004 has 48 divisors (see below), whose sum is σ = 50065846275200. Its totient is φ = 7049806975296.

The previous prime is 21303103030997. The next prime is 21303103031027. The reversal of 21303103031004 is 40013030130312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114059607 + ... + 114246225.

Almost surely, 2^{21303103031004} is an apocalyptic number.

It is an amenable number.

21303103031004 is an abundant number, since it is smaller than the sum of its proper divisors (28762743244196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21303103031004 is a wasteful number, since it uses less digits than its factorization.

21303103031004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255202 (or 255200 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21303103031004 its reverse (40013030130312), we get a palindrome (61316133161316).

The spelling of 21303103031004 in words is "twenty-one trillion, three hundred three billion, one hundred three million, thirty-one thousand, four".