11131312302 has 128 divisors (see below), whose sum is σ = 27799511040. Its totient is φ = 3272256000.

The previous prime is 11131312271. The next prime is 11131312331. The reversal of 11131312302 is 20321313111.

It is a super-2 number, since 2×11131312302² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 4650418 + ... + 4652810.

It is an arithmetic number, because the mean of its divisors is an integer number (217183680).

Almost surely, 2^11131312302 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11131312302, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13899755520).

11131312302 is an abundant number, since it is smaller than the sum of its proper divisors (16668198738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11131312302 is a wasteful number, since it uses less digits than its factorization.

11131312302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2647 (or 2641 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 11131312302 its reverse (20321313111), we get a palindrome (31452625413).

The spelling of 11131312302 in words is "eleven billion, one hundred thirty-one million, three hundred twelve thousand, three hundred two".