21311313103030 has 128 divisors (see below), whose sum is σ = 39233993556096. Its totient is φ = 8333425152000.

The previous prime is 21311313103019. The next prime is 21311313103063. The reversal of 21311313103030 is 3030131311312.

It is a junction number, because it is equal to n+sod(n) for n = 21311313102992 and 21311313103010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 25957750020 + ... + 25957750840.

It is an arithmetic number, because the mean of its divisors is an integer number (306515574657).

Almost surely, 2^{21311313103030} is an apocalyptic number.

21311313103030 is a deficient number, since it is larger than the sum of its proper divisors (17922680453066).

21311313103030 is a wasteful number, since it uses less digits than its factorization.

21311313103030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1922.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 21311313103030 its reverse (3030131311312), we get a palindrome (24341444414342).

The spelling of 21311313103030 in words is "twenty-one trillion, three hundred eleven billion, three hundred thirteen million, one hundred three thousand, thirty".