21323632310 has 16 divisors (see below), whose sum is σ = 38422830816. Its totient is φ = 8520499008.

The previous prime is 21323632249. The next prime is 21323632333. The reversal of 21323632310 is 1323632312.

It is a happy number.

It is a super-2 number, since 2×21323632310² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21323632310.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1109234 + ... + 1128293.

It is an arithmetic number, because the mean of its divisors is an integer number (2401426926).

Almost surely, 2^21323632310 is an apocalyptic number.

21323632310 is a deficient number, since it is larger than the sum of its proper divisors (17099198506).

21323632310 is a wasteful number, since it uses less digits than its factorization.

21323632310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2238487.

The product of its (nonzero) digits is 3888, while the sum is 26.

The spelling of 21323632310 in words is "twenty-one billion, three hundred twenty-three million, six hundred thirty-two thousand, three hundred ten".