173399355431 has 2 divisors, whose sum is σ = 173399355432. Its totient is φ = 173399355430.

The previous prime is 173399355323. The next prime is 173399355433. The reversal of 173399355431 is 134553993371.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-173399355431 is a prime.

It is a super-2 number, since 2×173399355431² (a number of 23 digits) contains 22 as substring.

Together with 173399355433, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (173399355433) 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, 86699677715 + 86699677716.

It is an arithmetic number, because the mean of its divisors is an integer number (86699677716).

Almost surely, 2^173399355431 is an apocalyptic number.

173399355431 is a deficient number, since it is larger than the sum of its proper divisors (1).

173399355431 is an equidigital number, since it uses as much as digits as its factorization.

173399355431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4592700, while the sum is 53.

The spelling of 173399355431 in words is "one hundred seventy-three billion, three hundred ninety-nine million, three hundred fifty-five thousand, four hundred thirty-one".