21310002030 has 32 divisors (see below), whose sum is σ = 52108989984. Its totient is φ = 5575446656.

The previous prime is 21310002011. The next prime is 21310002041. The reversal of 21310002030 is 3020001312.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21310001997 and 21310002015.

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, 6699669 + ... + 6702848.

It is an arithmetic number, because the mean of its divisors is an integer number (1628405937).

Almost surely, 2^21310002030 is an apocalyptic number.

21310002030 is an abundant number, since it is smaller than the sum of its proper divisors (30798987954).

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

21310002030 is a wasteful number, since it uses less digits than its factorization.

21310002030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13402580.

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 21310002030 its reverse (3020001312), we get a palindrome (24330003342).

The spelling of 21310002030 in words is "twenty-one billion, three hundred ten million, two thousand, thirty".