21310203230 has 16 divisors (see below), whose sum is σ = 38360420640. Its totient is φ = 8523624672.

The previous prime is 21310203223. The next prime is 21310203247. The reversal of 21310203230 is 3230201312.

It is a junction number, because it is equal to n+sod(n) for n = 21310203199 and 21310203208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189767 + ... + 280413.

It is an arithmetic number, because the mean of its divisors is an integer number (2397526290).

Almost surely, 2^21310203230 is an apocalyptic number.

21310203230 is a deficient number, since it is larger than the sum of its proper divisors (17050217410).

21310203230 is a wasteful number, since it uses less digits than its factorization.

21310203230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114163.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21310203230 its reverse (3230201312), we get a palindrome (24540404542).

The spelling of 21310203230 in words is "twenty-one billion, three hundred ten million, two hundred three thousand, two hundred thirty".