20393895131 has 2 divisors, whose sum is σ = 20393895132. Its totient is φ = 20393895130.

The previous prime is 20393895107. The next prime is 20393895143. The reversal of 20393895131 is 13159839302.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20393895131 is a prime.

It is a super-2 number, since 2×20393895131² (a number of 21 digits) contains 22 as substring.

It is a zygodrome in base 8.

It is not a weakly prime, because it can be changed into another prime (20393891131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10196947565 + 10196947566.

It is an arithmetic number, because the mean of its divisors is an integer number (10196947566).

Almost surely, 2^20393895131 is an apocalyptic number.

20393895131 is a deficient number, since it is larger than the sum of its proper divisors (1).

20393895131 is an equidigital number, since it uses as much as digits as its factorization.

20393895131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 174960, while the sum is 44.

The spelling of 20393895131 in words is "twenty billion, three hundred ninety-three million, eight hundred ninety-five thousand, one hundred thirty-one".