3081139 has 2 divisors, whose sum is σ = 3081140. Its totient is φ = 3081138.

The previous prime is 3081137. The next prime is 3081151. The reversal of 3081139 is 9311803.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3081139 - 2¹ = 3081137 is a prime.

Together with 3081137, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3081137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1540569 + 1540570.

It is an arithmetic number, because the mean of its divisors is an integer number (1540570).

Almost surely, 2^3081139 is an apocalyptic number.

3081139 is a deficient number, since it is larger than the sum of its proper divisors (1).

3081139 is an equidigital number, since it uses as much as digits as its factorization.

3081139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 3081139 is about 1755.3173502247. The cubic root of 3081139 is about 145.5136597907.

The spelling of 3081139 in words is "three million, eighty-one thousand, one hundred thirty-nine".