3172705345 has 8 divisors (see below), whose sum is σ = 3879081576. Its totient is φ = 2490274176.

The previous prime is 3172705339. The next prime is 3172705363. The reversal of 3172705345 is 5435072713.

It can be written as a sum of positive squares in 4 ways, for example, as 1506759489 + 1665945856 = 38817^2 + 40816^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3172705345 - 2¹³ = 3172697153 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5985972 + ... + 5986501.

It is an arithmetic number, because the mean of its divisors is an integer number (484885197).

Almost surely, 2^3172705345 is an apocalyptic number.

It is an amenable number.

3172705345 is a deficient number, since it is larger than the sum of its proper divisors (706376231).

3172705345 is a wasteful number, since it uses less digits than its factorization.

3172705345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11972531.

The product of its (nonzero) digits is 88200, while the sum is 37.

The square root of 3172705345 is about 56326.7728970869. The cubic root of 3172705345 is about 1469.4108650071.

The spelling of 3172705345 in words is "three billion, one hundred seventy-two million, seven hundred five thousand, three hundred forty-five".