3123111091 has 2 divisors, whose sum is σ = 3123111092. Its totient is φ = 3123111090.

The previous prime is 3123111077. The next prime is 3123111161. The reversal of 3123111091 is 1901113213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3123111091 - 2²³ = 3114722483 is a prime.

It is a zygodrome in base 3.

It is not a weakly prime, because it can be changed into another prime (3123111041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1561555545 + 1561555546.

It is an arithmetic number, because the mean of its divisors is an integer number (1561555546).

Almost surely, 2^3123111091 is an apocalyptic number.

3123111091 is a deficient number, since it is larger than the sum of its proper divisors (1).

3123111091 is an equidigital number, since it uses as much as digits as its factorization.

3123111091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 3123111091 is about 55884.8019679769. The cubic root of 3123111091 is about 1461.7142388861.

The spelling of 3123111091 in words is "three billion, one hundred twenty-three million, one hundred eleven thousand, ninety-one".