20311297802973 has 16 divisors (see below), whose sum is σ = 30091430366400. Its totient is φ = 13540586739120.

The previous prime is 20311297802959. The next prime is 20311297803029. The reversal of 20311297802973 is 37920879211302.

It is a happy number.

20311297802973 is a `hidden beast` number, since 203 + 1 + 1 + 297 + 80 + 2 + 9 + 73 = 666.

It is not a de Polignac number, because 20311297802973 - 2⁶ = 20311297802909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20311297802933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6393603 + ... + 9027776.

It is an arithmetic number, because the mean of its divisors is an integer number (1880714397900).

Almost surely, 2^{20311297802973} is an apocalyptic number.

It is an amenable number.

20311297802973 is a deficient number, since it is larger than the sum of its proper divisors (9780132563427).

20311297802973 is a wasteful number, since it uses less digits than its factorization.

20311297802973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15470169 (or 15470163 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 20311297802973 in words is "twenty trillion, three hundred eleven billion, two hundred ninety-seven million, eight hundred two thousand, nine hundred seventy-three".