1109091031 has 2 divisors, whose sum is σ = 1109091032. Its totient is φ = 1109091030.

The previous prime is 1109090989. The next prime is 1109091037. The reversal of 1109091031 is 1301909011.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1109091031 - 2¹⁹ = 1108566743 is a prime.

It is a super-2 number, since 2×1109091031² = 2460165830089285922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1109090987 and 1109091005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1109091037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554545515 + 554545516.

It is an arithmetic number, because the mean of its divisors is an integer number (554545516).

Almost surely, 2^1109091031 is an apocalyptic number.

1109091031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109091031 is an equidigital number, since it uses as much as digits as its factorization.

1109091031 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 25.

The square root of 1109091031 is about 33303.0183466904. The cubic root of 1109091031 is about 1035.1161020153.

The spelling of 1109091031 in words is "one billion, one hundred nine million, ninety-one thousand, thirty-one".