20413213223 has 4 divisors (see below), whose sum is σ = 21983460408. Its totient is φ = 18842966040.

The previous prime is 20413213189. The next prime is 20413213273. The reversal of 20413213223 is 32231231402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20413213223 - 2⁶ = 20413213159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20413213273) 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, 785123573 + ... + 785123598.

It is an arithmetic number, because the mean of its divisors is an integer number (5495865102).

Almost surely, 2^20413213223 is an apocalyptic number.

20413213223 is a deficient number, since it is larger than the sum of its proper divisors (1570247185).

20413213223 is a wasteful number, since it uses less digits than its factorization.

20413213223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570247184.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 20413213223 its reverse (32231231402), we get a palindrome (52644444625).

The spelling of 20413213223 in words is "twenty billion, four hundred thirteen million, two hundred thirteen thousand, two hundred twenty-three".