128934813930731 has 2 divisors, whose sum is σ = 128934813930732. Its totient is φ = 128934813930730.

The previous prime is 128934813930679. The next prime is 128934813930737. The reversal of 128934813930731 is 137039318439821.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128934813930731 is a prime.

It is a super-2 number, since 2×128934813930731² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (128934813930737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64467406965365 + 64467406965366.

It is an arithmetic number, because the mean of its divisors is an integer number (64467406965366).

Almost surely, 2^{128934813930731} is an apocalyptic number.

128934813930731 is a deficient number, since it is larger than the sum of its proper divisors (1).

128934813930731 is an equidigital number, since it uses as much as digits as its factorization.

128934813930731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23514624, while the sum is 62.

The spelling of 128934813930731 in words is "one hundred twenty-eight trillion, nine hundred thirty-four billion, eight hundred thirteen million, nine hundred thirty thousand, seven hundred thirty-one".