1101311209 has 8 divisors (see below), whose sum is σ = 1132346880. Its totient is φ = 1070474400.

The previous prime is 1101311207. The next prime is 1101311249. The reversal of 1101311209 is 9021131011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1101311209 - 2¹ = 1101311207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1101311201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38449 + ... + 60670.

It is an arithmetic number, because the mean of its divisors is an integer number (141543360).

Almost surely, 2^1101311209 is an apocalyptic number.

It is an amenable number.

1101311209 is a deficient number, since it is larger than the sum of its proper divisors (31035671).

1101311209 is an equidigital number, since it uses as much as digits as its factorization.

1101311209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99431.

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

The square root of 1101311209 is about 33186.0092358210. The cubic root of 1101311209 is about 1032.6901147065.

It can be divided in two parts, 11013 and 11209, that added together give a palindrome (22222).

The spelling of 1101311209 in words is "one billion, one hundred one million, three hundred eleven thousand, two hundred nine".