11110312009 has 2 divisors, whose sum is σ = 11110312010. Its totient is φ = 11110312008.

The previous prime is 11110311913. The next prime is 11110312033. The reversal of 11110312009 is 90021301111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7821633600 + 3288678409 = 88440^2 + 57347^2 .

It is a cyclic number.

It is not a de Polignac number, because 11110312009 - 2¹⁷ = 11110180937 is a prime.

It is a super-3 number, since 3×11110312009³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (11110312069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555156004 + 5555156005.

It is an arithmetic number, because the mean of its divisors is an integer number (5555156005).

Almost surely, 2^11110312009 is an apocalyptic number.

It is an amenable number.

11110312009 is a deficient number, since it is larger than the sum of its proper divisors (1).

11110312009 is an equidigital number, since it uses as much as digits as its factorization.

11110312009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 19.

The spelling of 11110312009 in words is "eleven billion, one hundred ten million, three hundred twelve thousand, nine".