3125531331 has 24 divisors (see below), whose sum is σ = 5117832720. Its totient is φ = 1822170816.

The previous prime is 3125531329. The next prime is 3125531363. The reversal of 3125531331 is 1331355213.

3125531331 is a `hidden beast` number, since 3 + 125 + 531 + 3 + 3 + 1 = 666.

It is not a de Polignac number, because 3125531331 - 2¹ = 3125531329 is a prime.

It is a super-2 number, since 2×3125531331² = 19537892202125263122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3125531295 and 3125531304.

It is not an unprimeable number, because it can be changed into a prime (3125531371) 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 23 ways as a sum of consecutive naturals, for example, 700776 + ... + 705221.

It is an arithmetic number, because the mean of its divisors is an integer number (213243030).

Almost surely, 2^3125531331 is an apocalyptic number.

3125531331 is a deficient number, since it is larger than the sum of its proper divisors (1992301389).

3125531331 is a wasteful number, since it uses less digits than its factorization.

3125531331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1406035 (or 1406032 counting only the distinct ones).

The product of its digits is 4050, while the sum is 27.

The square root of 3125531331 is about 55906.4516044437. The cubic root of 3125531331 is about 1462.0917242118.

Adding to 3125531331 its reverse (1331355213), we get a palindrome (4456886544).

The spelling of 3125531331 in words is "three billion, one hundred twenty-five million, five hundred thirty-one thousand, three hundred thirty-one".