21203230310 has 24 divisors (see below), whose sum is σ = 40280270976. Its totient is φ = 8034906960.

The previous prime is 21203230309. The next prime is 21203230313. The reversal of 21203230310 is 1303230212.

It is a super-2 number, since 2×21203230310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21203230313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2933126 + ... + 2940345.

It is an arithmetic number, because the mean of its divisors is an integer number (1678344624).

Almost surely, 2^21203230310 is an apocalyptic number.

21203230310 is a deficient number, since it is larger than the sum of its proper divisors (19077040666).

21203230310 is a wasteful number, since it uses less digits than its factorization.

21203230310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5873516 (or 5873497 counting only the distinct ones).

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

Adding to 21203230310 its reverse (1303230212), we get a palindrome (22506460522).

The spelling of 21203230310 in words is "twenty-one billion, two hundred three million, two hundred thirty thousand, three hundred ten".