20313144243 has 12 divisors (see below), whose sum is σ = 33532809648. Its totient is φ = 11607510960.

The previous prime is 20313144211. The next prime is 20313144251. The reversal of 20313144243 is 34244131302.

20313144243 is a `hidden beast` number, since 203 + 1 + 31 + 4 + 424 + 3 = 666.

It is not a de Polignac number, because 20313144243 - 2⁵ = 20313144211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20313144343) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 161215368 + ... + 161215493.

It is an arithmetic number, because the mean of its divisors is an integer number (2794400804).

Almost surely, 2^20313144243 is an apocalyptic number.

20313144243 is a deficient number, since it is larger than the sum of its proper divisors (13219665405).

20313144243 is a wasteful number, since it uses less digits than its factorization.

20313144243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322430874 (or 322430871 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 20313144243 its reverse (34244131302), we get a palindrome (54557275545).

The spelling of 20313144243 in words is "twenty billion, three hundred thirteen million, one hundred forty-four thousand, two hundred forty-three".