3091427 has 2 divisors, whose sum is σ = 3091428. Its totient is φ = 3091426.

The previous prime is 3091421. The next prime is 3091457. The reversal of 3091427 is 7241903.

It is a weak prime.

It is an emirp because it is prime and its reverse (7241903) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3091427 - 2⁸ = 3091171 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3091396 and 3091405.

It is not a weakly prime, because it can be changed into another prime (3091421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1545713 + 1545714.

It is an arithmetic number, because the mean of its divisors is an integer number (1545714).

Almost surely, 2^3091427 is an apocalyptic number.

3091427 is a deficient number, since it is larger than the sum of its proper divisors (1).

3091427 is an equidigital number, since it uses as much as digits as its factorization.

3091427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 3091427 is about 1758.2454322420. The cubic root of 3091427 is about 145.6754377774.

The spelling of 3091427 in words is "three million, ninety-one thousand, four hundred twenty-seven".