20430221313 has 8 divisors (see below), whose sum is σ = 27322593376. Its totient is φ = 13578998400.

The previous prime is 20430221267. The next prime is 20430221341. The reversal of 20430221313 is 31312203402.

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

It is not a de Polignac number, because 20430221313 - 2¹⁴ = 20430204929 is a prime.

It is a super-3 number, since 3×20430221313³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20430221313.

It is not an unprimeable number, because it can be changed into a prime (20430221353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10286128 + ... + 10288113.

It is an arithmetic number, because the mean of its divisors is an integer number (3415324172).

Almost surely, 2^20430221313 is an apocalyptic number.

It is an amenable number.

20430221313 is a deficient number, since it is larger than the sum of its proper divisors (6892372063).

20430221313 is a wasteful number, since it uses less digits than its factorization.

20430221313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20574575.

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

Adding to 20430221313 its reverse (31312203402), we get a palindrome (51742424715).

The spelling of 20430221313 in words is "twenty billion, four hundred thirty million, two hundred twenty-one thousand, three hundred thirteen".