3125443291 has 4 divisors (see below), whose sum is σ = 3134297592. Its totient is φ = 3116588992.

The previous prime is 3125443289. The next prime is 3125443331. The reversal of 3125443291 is 1923445213.

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

It is not a de Polignac number, because 3125443291 - 2¹ = 3125443289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3125443201) 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, 4426621 + ... + 4427326.

It is an arithmetic number, because the mean of its divisors is an integer number (783574398).

Almost surely, 2^3125443291 is an apocalyptic number.

3125443291 is a deficient number, since it is larger than the sum of its proper divisors (8854301).

3125443291 is an equidigital number, since it uses as much as digits as its factorization.

3125443291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8854300.

The product of its digits is 25920, while the sum is 34.

The square root of 3125443291 is about 55905.6642121351. The cubic root of 3125443291 is about 1462.0779960111.

The spelling of 3125443291 in words is "three billion, one hundred twenty-five million, four hundred forty-three thousand, two hundred ninety-one".