21230223313 has 16 divisors (see below), whose sum is σ = 23442967296. Its totient is φ = 19103616000.

The previous prime is 21230223299. The next prime is 21230223353. The reversal of 21230223313 is 31332203212.

It is a cyclic number.

It is not a de Polignac number, because 21230223313 - 2¹³ = 21230215121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21230223353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84145 + ... + 222577.

It is an arithmetic number, because the mean of its divisors is an integer number (1465185456).

Almost surely, 2^21230223313 is an apocalyptic number.

It is an amenable number.

21230223313 is a deficient number, since it is larger than the sum of its proper divisors (2212743983).

21230223313 is a wasteful number, since it uses less digits than its factorization.

21230223313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138744.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21230223313 its reverse (31332203212), we get a palindrome (52562426525).

The spelling of 21230223313 in words is "twenty-one billion, two hundred thirty million, two hundred twenty-three thousand, three hundred thirteen".