31430288717173 has 24 divisors (see below), whose sum is σ = 33652411531200. Its totient is φ = 29336582130240.

The previous prime is 31430288717137. The next prime is 31430288717189. The reversal of 31430288717173 is 37171788203413.

It is a de Polignac number, because none of the positive numbers 2^k-31430288717173 is a prime.

It is a super-2 number, since 2×31430288717173² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31430238717173) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23203008 + ... + 24520198.

It is an arithmetic number, because the mean of its divisors is an integer number (1402183813800).

Almost surely, 2^{31430288717173} is an apocalyptic number.

It is an amenable number.

31430288717173 is a deficient number, since it is larger than the sum of its proper divisors (2222122814027).

31430288717173 is a wasteful number, since it uses less digits than its factorization.

31430288717173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318329 (or 1318306 counting only the distinct ones).

The product of its (nonzero) digits is 4741632, while the sum is 55.

The spelling of 31430288717173 in words is "thirty-one trillion, four hundred thirty billion, two hundred eighty-eight million, seven hundred seventeen thousand, one hundred seventy-three".