21310003004 has 12 divisors (see below), whose sum is σ = 37711522800. Its totient is φ = 10535282208.

The previous prime is 21310002991. The next prime is 21310003019. The reversal of 21310003004 is 40030001312.

It is a self number, because there is not a number n which added to its sum of digits gives 21310003004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29929424 + ... + 29930135.

It is an arithmetic number, because the mean of its divisors is an integer number (3142626900).

Almost surely, 2^21310003004 is an apocalyptic number.

It is an amenable number.

21310003004 is a deficient number, since it is larger than the sum of its proper divisors (16401519796).

21310003004 is a wasteful number, since it uses less digits than its factorization.

21310003004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59859652 (or 59859650 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 21310003004 its reverse (40030001312), we get a palindrome (61340004316).

The spelling of 21310003004 in words is "twenty-one billion, three hundred ten million, three thousand, four".