3123091 has 2 divisors, whose sum is σ = 3123092. Its totient is φ = 3123090.

The previous prime is 3123089. The next prime is 3123137. The reversal of 3123091 is 1903213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3123091 - 2¹ = 3123089 is a prime.

Together with 3123089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3123061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1561545 + 1561546.

It is an arithmetic number, because the mean of its divisors is an integer number (1561546).

Almost surely, 2^3123091 is an apocalyptic number.

3123091 is a deficient number, since it is larger than the sum of its proper divisors (1).

3123091 is an equidigital number, since it uses as much as digits as its factorization.

3123091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 3123091 is about 1767.2269237424. The cubic root of 3123091 is about 146.1711104473.

It can be divided in two parts, 312 and 3091, that added together give a triangular number (3403 = T₈₂).

The spelling of 3123091 in words is "three million, one hundred twenty-three thousand, ninety-one".