11201312309 has 24 divisors (see below), whose sum is σ = 12546092160. Its totient is φ = 9990263360.

The previous prime is 11201312303. The next prime is 11201312341. The reversal of 11201312309 is 90321310211.

It is not a de Polignac number, because 11201312309 - 2²⁰ = 11200263733 is a prime.

It is a super-2 number, since 2×11201312309² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201312303) 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 23 ways as a sum of consecutive naturals, for example, 4403492 + ... + 4406034.

It is an arithmetic number, because the mean of its divisors is an integer number (522753840).

Almost surely, 2^11201312309 is an apocalyptic number.

It is an amenable number.

11201312309 is a deficient number, since it is larger than the sum of its proper divisors (1344779851).

11201312309 is a wasteful number, since it uses less digits than its factorization.

11201312309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3241 (or 3230 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 23.

The spelling of 11201312309 in words is "eleven billion, two hundred one million, three hundred twelve thousand, three hundred nine".