21010232343 has 32 divisors (see below), whose sum is σ = 28515801600. Its totient is φ = 13758750720.

The previous prime is 21010232317. The next prime is 21010232351. The reversal of 21010232343 is 34323201012.

It is not a de Polignac number, because 21010232343 - 2¹² = 21010228247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010232363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18221655 + ... + 18222807.

It is an arithmetic number, because the mean of its divisors is an integer number (891118800).

Almost surely, 2^21010232343 is an apocalyptic number.

21010232343 is a deficient number, since it is larger than the sum of its proper divisors (7505569257).

21010232343 is a wasteful number, since it uses less digits than its factorization.

21010232343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1719.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21010232343 its reverse (34323201012), we get a palindrome (55333433355).

The spelling of 21010232343 in words is "twenty-one billion, ten million, two hundred thirty-two thousand, three hundred forty-three".