20440232343 has 24 divisors (see below), whose sum is σ = 29596037120. Its totient is φ = 13593983760.

The previous prime is 20440232341. The next prime is 20440232347. The reversal of 20440232343 is 34323204402.

20440232343 is a `hidden beast` number, since 20 + 4 + 402 + 3 + 234 + 3 = 666.

It is not a de Polignac number, because 20440232343 - 2¹ = 20440232341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20440232341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10163208 + ... + 10165218.

Almost surely, 2^20440232343 is an apocalyptic number.

20440232343 is a deficient number, since it is larger than the sum of its proper divisors (9155804777).

20440232343 is a wasteful number, since it uses less digits than its factorization.

20440232343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4179 (or 4176 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 27.

Adding to 20440232343 its reverse (34323204402), we get a palindrome (54763436745).

The spelling of 20440232343 in words is "twenty billion, four hundred forty million, two hundred thirty-two thousand, three hundred forty-three".