3139147243 has 4 divisors (see below), whose sum is σ = 3141928840. Its totient is φ = 3136365648.

The previous prime is 3139147217. The next prime is 3139147259. The reversal of 3139147243 is 3427419313.

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 3139147243 - 2¹³ = 3139139051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3139147283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1389105 + ... + 1391362.

It is an arithmetic number, because the mean of its divisors is an integer number (785482210).

Almost surely, 2^3139147243 is an apocalyptic number.

3139147243 is a deficient number, since it is larger than the sum of its proper divisors (2781597).

3139147243 is a wasteful number, since it uses less digits than its factorization.

3139147243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2781596.

The product of its digits is 54432, while the sum is 37.

The square root of 3139147243 is about 56028.0933371822. The cubic root of 3139147243 is about 1464.2117769410.

The spelling of 3139147243 in words is "three billion, one hundred thirty-nine million, one hundred forty-seven thousand, two hundred forty-three".