21310202234 has 8 divisors (see below), whose sum is σ = 31967806260. Its totient is φ = 10654266816.

The previous prime is 21310202233. The next prime is 21310202237. The reversal of 21310202234 is 43220201312.

It can be written as a sum of positive squares in 2 ways, for example, as 21299943025 + 10259209 = 145945^2 + 3203^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21310202233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 384719 + ... + 436610.

Almost surely, 2^21310202234 is an apocalyptic number.

21310202234 is a deficient number, since it is larger than the sum of its proper divisors (10657604026).

21310202234 is a wasteful number, since it uses less digits than its factorization.

21310202234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834304.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21310202234 its reverse (43220201312), we get a palindrome (64530403546).

The spelling of 21310202234 in words is "twenty-one billion, three hundred ten million, two hundred two thousand, two hundred thirty-four".