3124391 has 4 divisors (see below), whose sum is σ = 3208872. Its totient is φ = 3039912.

The previous prime is 3124367. The next prime is 3124393. The reversal of 3124391 is 1934213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1934213 = 29 ⋅66697.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3124391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3124393) 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, 42185 + ... + 42258.

It is an arithmetic number, because the mean of its divisors is an integer number (802218).

Almost surely, 2^3124391 is an apocalyptic number.

3124391 is a deficient number, since it is larger than the sum of its proper divisors (84481).

3124391 is an equidigital number, since it uses as much as digits as its factorization.

3124391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84480.

The product of its digits is 648, while the sum is 23.

The square root of 3124391 is about 1767.5946933616. The cubic root of 3124391 is about 146.1913890840.

The spelling of 3124391 in words is "three million, one hundred twenty-four thousand, three hundred ninety-one".