20352434223 has 16 divisors (see below), whose sum is σ = 29792105856. Its totient is φ = 12256239840.

The previous prime is 20352434209. The next prime is 20352434339. The reversal of 20352434223 is 32243425302.

It is a happy number.

It is not a de Polignac number, because 20352434223 - 2⁵ = 20352434191 is a prime.

It is a super-2 number, since 2×20352434223² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20352434203) 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, 1958961 + ... + 1969322.

It is an arithmetic number, because the mean of its divisors is an integer number (1862006616).

Almost surely, 2^20352434223 is an apocalyptic number.

20352434223 is a deficient number, since it is larger than the sum of its proper divisors (9439671633).

20352434223 is a wasteful number, since it uses less digits than its factorization.

20352434223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3928454.

The product of its (nonzero) digits is 34560, while the sum is 30.

Adding to 20352434223 its reverse (32243425302), we get a palindrome (52595859525).

The spelling of 20352434223 in words is "twenty billion, three hundred fifty-two million, four hundred thirty-four thousand, two hundred twenty-three".