21314247310 has 64 divisors (see below), whose sum is σ = 41426795520. Its totient is φ = 7869536640.

The previous prime is 21314247293. The next prime is 21314247323. The reversal of 21314247310 is 1374241312.

It is a super-2 number, since 2×21314247310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3518244 + ... + 3524296.

It is an arithmetic number, because the mean of its divisors is an integer number (647293680).

Almost surely, 2^21314247310 is an apocalyptic number.

21314247310 is a deficient number, since it is larger than the sum of its proper divisors (20112548210).

21314247310 is a wasteful number, since it uses less digits than its factorization.

21314247310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6553.

The product of its (nonzero) digits is 4032, while the sum is 28.

Adding to 21314247310 its reverse (1374241312), we get a palindrome (22688488622).

The spelling of 21314247310 in words is "twenty-one billion, three hundred fourteen million, two hundred forty-seven thousand, three hundred ten".