1027112309 has 4 divisors (see below), whose sum is σ = 1027507404. Its totient is φ = 1026717216.

The previous prime is 1027112213. The next prime is 1027112353. The reversal of 1027112309 is 9032117201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 799192900 + 227919409 = 28270^2 + 15097^2 .

It is a cyclic number.

It is not a de Polignac number, because 1027112309 - 2²⁰ = 1026063733 is a prime.

It is a super-2 number, since 2×1027112309² = 2109919390598622962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1027112509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193622 + ... + 198855.

It is an arithmetic number, because the mean of its divisors is an integer number (256876851).

Almost surely, 2^1027112309 is an apocalyptic number.

It is an amenable number.

1027112309 is a deficient number, since it is larger than the sum of its proper divisors (395095).

1027112309 is an equidigital number, since it uses as much as digits as its factorization.

1027112309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395094.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 1027112309 is about 32048.5929332319. The cubic root of 1027112309 is about 1008.9569694995.

The spelling of 1027112309 in words is "one billion, twenty-seven million, one hundred twelve thousand, three hundred nine".