3133316521 has 4 divisors (see below), whose sum is σ = 3150627844. Its totient is φ = 3116005200.

The previous prime is 3133316471. The next prime is 3133316533. The reversal of 3133316521 is 1256133313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1256133313 = 37 ⋅33949549.

It can be written as a sum of positive squares in 2 ways, for example, as 777573225 + 2355743296 = 27885^2 + 48536^2 .

It is a cyclic number.

It is not a de Polignac number, because 3133316521 - 2²⁷ = 2999098793 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3133316521.

It is not an unprimeable number, because it can be changed into a prime (3133311521) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 8655390 + ... + 8655751.

It is an arithmetic number, because the mean of its divisors is an integer number (787656961).

Almost surely, 2^3133316521 is an apocalyptic number.

It is an amenable number.

3133316521 is a deficient number, since it is larger than the sum of its proper divisors (17311323).

3133316521 is a wasteful number, since it uses less digits than its factorization.

3133316521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17311322.

The product of its digits is 4860, while the sum is 28.

The square root of 3133316521 is about 55976.0352383053. The cubic root of 3133316521 is about 1463.3046618893.

Adding to 3133316521 its reverse (1256133313), we get a palindrome (4389449834).

The spelling of 3133316521 in words is "three billion, one hundred thirty-three million, three hundred sixteen thousand, five hundred twenty-one".