20839873233031 has 2 divisors, whose sum is σ = 20839873233032. Its totient is φ = 20839873233030.

The previous prime is 20839873233019. The next prime is 20839873233041. The reversal of 20839873233031 is 13033237893802.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20839873233031 is a prime.

It is a super-2 number, since 2×20839873233031² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20839873233031.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20839873233041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10419936616515 + 10419936616516.

It is an arithmetic number, because the mean of its divisors is an integer number (10419936616516).

Almost surely, 2^{20839873233031} is an apocalyptic number.

20839873233031 is a deficient number, since it is larger than the sum of its proper divisors (1).

20839873233031 is an equidigital number, since it uses as much as digits as its factorization.

20839873233031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3919104, while the sum is 52.

The spelling of 20839873233031 in words is "twenty trillion, eight hundred thirty-nine billion, eight hundred seventy-three million, two hundred thirty-three thousand, thirty-one".