1231093 has 2 divisors, whose sum is σ = 1231094. Its totient is φ = 1231092.

The previous prime is 1231091. The next prime is 1231099. The reversal of 1231093 is 3901321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1129969 + 101124 = 1063^2 + 318^2 .

It is a cyclic number.

It is not a de Polignac number, because 1231093 - 2¹ = 1231091 is a prime.

Together with 1231091, it forms a pair of twin primes.

1231093 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1231093.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615546 + 615547.

It is an arithmetic number, because the mean of its divisors is an integer number (615547).

2^1231093 is an apocalyptic number.

It is an amenable number.

1231093 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231093 is an equidigital number, since it uses as much as digits as its factorization.

1231093 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 19.

The square root of 1231093 is about 1109.5463036755. The cubic root of 1231093 is about 107.1758543023.

It can be divided in two parts, 12310 and 93, that added together give a triangular number (12403 = T₁₅₇).

The spelling of 1231093 in words is "one million, two hundred thirty-one thousand, ninety-three".