3281139673 has 4 divisors (see below), whose sum is σ = 3749873920. Its totient is φ = 2812405428.

The previous prime is 3281139671. The next prime is 3281139679. The reversal of 3281139673 is 3769311823.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3769311823 = 53 ⋅71119091.

It is not a de Polignac number, because 3281139673 - 2¹ = 3281139671 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3281139671) 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, 234367113 + ... + 234367126.

It is an arithmetic number, because the mean of its divisors is an integer number (937468480).

Almost surely, 2^3281139673 is an apocalyptic number.

It is an amenable number.

3281139673 is a deficient number, since it is larger than the sum of its proper divisors (468734247).

3281139673 is an equidigital number, since it uses as much as digits as its factorization.

3281139673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468734246.

The product of its digits is 163296, while the sum is 43.

The square root of 3281139673 is about 57281.2331658459. The cubic root of 3281139673 is about 1485.9638333990.

The spelling of 3281139673 in words is "three billion, two hundred eighty-one million, one hundred thirty-nine thousand, six hundred seventy-three".