3121603264 has 56 divisors (see below), whose sum is σ = 6780395888. Its totient is φ = 1417098240.

The previous prime is 3121603259. The next prime is 3121603267. The reversal of 3121603264 is 4623061213.

It is not an unprimeable number, because it can be changed into a prime (3121603267) 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, 19999 + ... + 81505.

It is an arithmetic number, because the mean of its divisors is an integer number (121078498).

Almost surely, 2^3121603264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3121603264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3390197944).

3121603264 is an abundant number, since it is smaller than the sum of its proper divisors (3658792624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3121603264 is a wasteful number, since it uses less digits than its factorization.

3121603264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61593 (or 61583 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 3121603264 is about 55871.3098468257. The cubic root of 3121603264 is about 1461.4789641955.

Adding to 3121603264 its reverse (4623061213), we get a palindrome (7744664477).

The spelling of 3121603264 in words is "three billion, one hundred twenty-one million, six hundred three thousand, two hundred sixty-four".