3217217145 has 8 divisors (see below), whose sum is σ = 5147547456. Its totient is φ = 1715849136.

The previous prime is 3217217111. The next prime is 3217217147. The reversal of 3217217145 is 5417127123.

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

It is not a de Polignac number, because 3217217145 - 2¹¹ = 3217215097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3217217147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107240557 + ... + 107240586.

It is an arithmetic number, because the mean of its divisors is an integer number (643443432).

Almost surely, 2^3217217145 is an apocalyptic number.

It is an amenable number.

3217217145 is a deficient number, since it is larger than the sum of its proper divisors (1930330311).

3217217145 is a wasteful number, since it uses less digits than its factorization.

3217217145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214481151.

The product of its digits is 11760, while the sum is 33.

The square root of 3217217145 is about 56720.5178484823. The cubic root of 3217217145 is about 1476.2507280933.

The spelling of 3217217145 in words is "three billion, two hundred seventeen million, two hundred seventeen thousand, one hundred forty-five".