3125247331 has 4 divisors (see below), whose sum is σ = 3125484072. Its totient is φ = 3125010592.

The previous prime is 3125247283. The next prime is 3125247373. The reversal of 3125247331 is 1337425213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3125247331 - 2⁹ = 3125246819 is a prime.

It is a super-2 number, since 2×3125247331² = 19534341759845247122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3125247293 and 3125247302.

It is not an unprimeable number, because it can be changed into a prime (3125247431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97321 + ... + 125386.

It is an arithmetic number, because the mean of its divisors is an integer number (781371018).

Almost surely, 2^3125247331 is an apocalyptic number.

3125247331 is a deficient number, since it is larger than the sum of its proper divisors (236741).

3125247331 is a wasteful number, since it uses less digits than its factorization.

3125247331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236740.

The product of its digits is 15120, while the sum is 31.

The square root of 3125247331 is about 55903.9115894407. The cubic root of 3125247331 is about 1462.0474387679.

The spelling of 3125247331 in words is "three billion, one hundred twenty-five million, two hundred forty-seven thousand, three hundred thirty-one".