20342143324 has 6 divisors (see below), whose sum is σ = 35598750824. Its totient is φ = 10171071660.

The previous prime is 20342143321. The next prime is 20342143387. The reversal of 20342143324 is 42334124302.

It is a junction number, because it is equal to n+sod(n) for n = 20342143292 and 20342143301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20342143321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2542767912 + ... + 2542767919.

Almost surely, 2^20342143324 is an apocalyptic number.

It is an amenable number.

20342143324 is a deficient number, since it is larger than the sum of its proper divisors (15256607500).

20342143324 is a wasteful number, since it uses less digits than its factorization.

20342143324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5085535835 (or 5085535833 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 20342143324 its reverse (42334124302), we get a palindrome (62676267626).

The spelling of 20342143324 in words is "twenty billion, three hundred forty-two million, one hundred forty-three thousand, three hundred twenty-four".