20313323012 has 12 divisors (see below), whose sum is σ = 35614027596. Its totient is φ = 10137886560.

The previous prime is 20313322993. The next prime is 20313323059. The reversal of 20313323012 is 21032331302.

It can be written as a sum of positive squares in 2 ways, for example, as 8961272896 + 11352050116 = 94664^2 + 106546^2 .

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, 4691303 + ... + 4695630.

It is an arithmetic number, because the mean of its divisors is an integer number (2967835633).

Almost surely, 2^20313323012 is an apocalyptic number.

It is an amenable number.

20313323012 is a deficient number, since it is larger than the sum of its proper divisors (15300704584).

20313323012 is a wasteful number, since it uses less digits than its factorization.

20313323012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9387478 (or 9387476 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20313323012 its reverse (21032331302), we get a palindrome (41345654314).

The spelling of 20313323012 in words is "twenty billion, three hundred thirteen million, three hundred twenty-three thousand, twelve".