20134131931 has 2 divisors, whose sum is σ = 20134131932. Its totient is φ = 20134131930.

The previous prime is 20134131863. The next prime is 20134132001. The reversal of 20134131931 is 13913143102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20134131931 - 2⁹ = 20134131419 is a prime.

It is a super-2 number, since 2×20134131931² (a number of 21 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 20134131931.

It is not a weakly prime, because it can be changed into another prime (20134134931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10067065965 + 10067065966.

It is an arithmetic number, because the mean of its divisors is an integer number (10067065966).

Almost surely, 2^20134131931 is an apocalyptic number.

20134131931 is a deficient number, since it is larger than the sum of its proper divisors (1).

20134131931 is an equidigital number, since it uses as much as digits as its factorization.

20134131931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

The spelling of 20134131931 in words is "twenty billion, one hundred thirty-four million, one hundred thirty-one thousand, nine hundred thirty-one".