3145744281 has 4 divisors (see below), whose sum is σ = 4194325712. Its totient is φ = 2097162852.

The previous prime is 3145744271. The next prime is 3145744297. The reversal of 3145744281 is 1824475413.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 3145744281 - 2¹¹ = 3145742233 is a prime.

It is a super-2 number, since 2×3145744281² = 19791414162888413922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3145744211) 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, 524290711 + ... + 524290716.

It is an arithmetic number, because the mean of its divisors is an integer number (1048581428).

Almost surely, 2^3145744281 is an apocalyptic number.

It is an amenable number.

3145744281 is a deficient number, since it is larger than the sum of its proper divisors (1048581431).

3145744281 is a wasteful number, since it uses less digits than its factorization.

3145744281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048581430.

The product of its digits is 107520, while the sum is 39.

The square root of 3145744281 is about 56086.9350294701. The cubic root of 3145744281 is about 1465.2367582814.

The spelling of 3145744281 in words is "three billion, one hundred forty-five million, seven hundred forty-four thousand, two hundred eighty-one".