689194343231 has 4 divisors (see below), whose sum is σ = 690793402464. Its totient is φ = 687595284000.

The previous prime is 689194343221. The next prime is 689194343237. The reversal of 689194343231 is 132343491986.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132343491986 = 2 ⋅66171745993.

It is a cyclic number.

It is not a de Polignac number, because 689194343231 - 2³⁰ = 688120601407 is a prime.

It is a super-3 number, since 3×689194343231³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689194343237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 799528970 + ... + 799529831.

It is an arithmetic number, because the mean of its divisors is an integer number (172698350616).

Almost surely, 2^689194343231 is an apocalyptic number.

689194343231 is a deficient number, since it is larger than the sum of its proper divisors (1599059233).

689194343231 is a wasteful number, since it uses less digits than its factorization.

689194343231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1599059232.

The product of its digits is 3359232, while the sum is 53.

The spelling of 689194343231 in words is "six hundred eighty-nine billion, one hundred ninety-four million, three hundred forty-three thousand, two hundred thirty-one".