3213715845 has 32 divisors (see below), whose sum is σ = 5285404800. Its totient is φ = 1666241280.

The previous prime is 3213715837. The next prime is 3213715861. The reversal of 3213715845 is 5485173123.

It is a happy number.

It is not a de Polignac number, because 3213715845 - 2³ = 3213715837 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1080210 + ... + 1083180.

It is an arithmetic number, because the mean of its divisors is an integer number (165168900).

Almost surely, 2^3213715845 is an apocalyptic number.

It is an amenable number.

3213715845 is a deficient number, since it is larger than the sum of its proper divisors (2071688955).

3213715845 is a wasteful number, since it uses less digits than its factorization.

3213715845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4965.

The product of its digits is 100800, while the sum is 39.

The square root of 3213715845 is about 56689.6449539067. The cubic root of 3213715845 is about 1475.7149987508.

Adding to 3213715845 its reverse (5485173123), we get a palindrome (8698888968).

The spelling of 3213715845 in words is "three billion, two hundred thirteen million, seven hundred fifteen thousand, eight hundred forty-five".