20313021112 has 8 divisors (see below), whose sum is σ = 38086914600. Its totient is φ = 10156510552.

The previous prime is 20313021109. The next prime is 20313021143. The reversal of 20313021112 is 21112031302.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1269563812 + ... + 1269563827.

It is an arithmetic number, because the mean of its divisors is an integer number (4760864325).

Almost surely, 2^20313021112 is an apocalyptic number.

It is an amenable number.

20313021112 is a deficient number, since it is larger than the sum of its proper divisors (17773893488).

20313021112 is a wasteful number, since it uses less digits than its factorization.

20313021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2539127645 (or 2539127641 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20313021112 its reverse (21112031302), we get a palindrome (41425052414).

The spelling of 20313021112 in words is "twenty billion, three hundred thirteen million, twenty-one thousand, one hundred twelve".