20305013031244 has 12 divisors (see below), whose sum is σ = 35813566292224. Its totient is φ = 10072565519184.

The previous prime is 20305013031209. The next prime is 20305013031323. The reversal of 20305013031244 is 44213031050302.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19985248539 + ... + 19985249554.

Almost surely, 2^{20305013031244} is an apocalyptic number.

It is an amenable number.

20305013031244 is a deficient number, since it is larger than the sum of its proper divisors (15508553260980).

20305013031244 is a wasteful number, since it uses less digits than its factorization.

20305013031244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39970498224 (or 39970498222 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 20305013031244 its reverse (44213031050302), we get a palindrome (64518044081546).

The spelling of 20305013031244 in words is "twenty trillion, three hundred five billion, thirteen million, thirty-one thousand, two hundred forty-four".