31789146343473 has 20 divisors (see below), whose sum is σ = 47490018824820. Its totient is φ = 21191635759392.

The previous prime is 31789146343403. The next prime is 31789146343573. The reversal of 31789146343473 is 37434364198713.

It is a happy number.

31789146343473 is a `hidden beast` number, since 3 + 1 + 7 + 8 + 91 + 46 + 3 + 434 + 73 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 25215783627024 + 6573362716449 = 5021532^2 + 2563857^2 .

It is not a de Polignac number, because 31789146343473 - 2¹⁷ = 31789146212401 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31789146343473.

It is not an unprimeable number, because it can be changed into a prime (31789146343403) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8916838 + ... + 11961951.

It is an arithmetic number, because the mean of its divisors is an integer number (2374500941241).

Almost surely, 2^{31789146343473} is an apocalyptic number.

It is an amenable number.

31789146343473 is a deficient number, since it is larger than the sum of its proper divisors (15700872481347).

31789146343473 is a wasteful number, since it uses less digits than its factorization.

31789146343473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20897598 (or 20897589 counting only the distinct ones).

The product of its digits is 109734912, while the sum is 63.

The spelling of 31789146343473 in words is "thirty-one trillion, seven hundred eighty-nine billion, one hundred forty-six million, three hundred forty-three thousand, four hundred seventy-three".