128102073431 has 2 divisors, whose sum is σ = 128102073432. Its totient is φ = 128102073430.

The previous prime is 128102073427. The next prime is 128102073493. The reversal of 128102073431 is 134370201821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128102073431 - 2² = 128102073427 is a prime.

It is a super-2 number, since 2×128102073431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128102073031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64051036715 + 64051036716.

It is an arithmetic number, because the mean of its divisors is an integer number (64051036716).

Almost surely, 2^128102073431 is an apocalyptic number.

128102073431 is a deficient number, since it is larger than the sum of its proper divisors (1).

128102073431 is an equidigital number, since it uses as much as digits as its factorization.

128102073431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 32.

The spelling of 128102073431 in words is "one hundred twenty-eight billion, one hundred two million, seventy-three thousand, four hundred thirty-one".