20023430422 has 16 divisors (see below), whose sum is σ = 31657087440. Its totient is φ = 9484095712.

The previous prime is 20023430419. The next prime is 20023430431. The reversal of 20023430422 is 22403432002.

It is a junction number, because it is equal to n+sod(n) for n = 20023430393 and 20023430402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3253828 + ... + 3259975.

It is an arithmetic number, because the mean of its divisors is an integer number (1978567965).

Almost surely, 2^20023430422 is an apocalyptic number.

20023430422 is a deficient number, since it is larger than the sum of its proper divisors (11633657018).

20023430422 is a wasteful number, since it uses less digits than its factorization.

20023430422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6513887.

The product of its (nonzero) digits is 2304, while the sum is 22.

Adding to 20023430422 its reverse (22403432002), we get a palindrome (42426862424).

The spelling of 20023430422 in words is "twenty billion, twenty-three million, four hundred thirty thousand, four hundred twenty-two".