20117453443131 has 24 divisors (see below), whose sum is σ = 29486784322240. Its totient is φ = 12191009062320.

The previous prime is 20117453443099. The next prime is 20117453443163. The reversal of 20117453443131 is 13134435471102.

It is an interprime number because it is at equal distance from previous prime (20117453443099) and next prime (20117453443163).

It is not a de Polignac number, because 20117453443131 - 2⁵ = 20117453443099 is a prime.

It is a super-2 number, since 2×20117453443131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20117453443131.

It is not an unprimeable number, because it can be changed into a prime (20117453443331) 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 23 ways as a sum of consecutive naturals, for example, 47700 + ... + 6343278.

Almost surely, 2^{20117453443131} is an apocalyptic number.

20117453443131 is a deficient number, since it is larger than the sum of its proper divisors (9369330879109).

20117453443131 is a wasteful number, since it uses less digits than its factorization.

20117453443131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6304407 (or 6304396 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 20117453443131 in words is "twenty trillion, one hundred seventeen billion, four hundred fifty-three million, four hundred forty-three thousand, one hundred thirty-one".