20303031424 has 64 divisors (see below), whose sum is σ = 44485741440. Its totient is φ = 9171219456.

The previous prime is 20303031421. The next prime is 20303031479. The reversal of 20303031424 is 42413030302.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 20303031395 and 20303031404.

It is not an unprimeable number, because it can be changed into a prime (20303031421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51594 + ... + 208009.

It is an arithmetic number, because the mean of its divisors is an integer number (695089710).

Almost surely, 2^20303031424 is an apocalyptic number.

It is an amenable number.

20303031424 is an abundant number, since it is smaller than the sum of its proper divisors (24182710016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20303031424 is a wasteful number, since it uses less digits than its factorization.

20303031424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259677 (or 259665 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 20303031424 its reverse (42413030302), we get a palindrome (62716061726).

The spelling of 20303031424 in words is "twenty billion, three hundred three million, thirty-one thousand, four hundred twenty-four".