1099031 has 2 divisors, whose sum is σ = 1099032.
Its totient is φ = 1099030.
The previous prime is 1098989. The next prime is 1099051. The reversal of 1099031 is 1309901.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 1099031 - 26 = 1098967 is a prime.
It is a super-2 number, since 2×10990312 = 2415738277922, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 1098988 and 1099006.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1099051) by changing a digit.
It is a good prime.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549515 + 549516.
It is an arithmetic number, because the mean of its divisors is an integer number (549516).
21099031 is an apocalyptic number.
1099031 is a deficient number, since it is larger than the sum of its proper divisors (1).
1099031 is an equidigital number, since it uses as much as digits as its factorization.
1099031 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 243, while the sum is 23.
The square root of 1099031 is about 1048.3467937663.
The cubic root of 1099031 is about 103.1976911428.
The spelling of 1099031 in words is "one million, ninety-nine thousand, thirty-one".