3211987745 has 8 divisors (see below), whose sum is σ = 3854692800. Its totient is φ = 2569385200.

The previous prime is 3211987711. The next prime is 3211987763. The reversal of 3211987745 is 5477891123.

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

It is not a de Polignac number, because 3211987745 - 2⁸ = 3211987489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3211987745.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94556 + ... + 123954.

It is an arithmetic number, because the mean of its divisors is an integer number (481836600).

Almost surely, 2^3211987745 is an apocalyptic number.

It is an amenable number.

3211987745 is a deficient number, since it is larger than the sum of its proper divisors (642705055).

3211987745 is a wasteful number, since it uses less digits than its factorization.

3211987745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51255.

The product of its digits is 423360, while the sum is 47.

The square root of 3211987745 is about 56674.4011437263. The cubic root of 3211987745 is about 1475.4504409980.

The spelling of 3211987745 in words is "three billion, two hundred eleven million, nine hundred eighty-seven thousand, seven hundred forty-five".