11311531120356 has 48 divisors (see below), whose sum is σ = 26588928408000. Its totient is φ = 3742637104512.

The previous prime is 11311531120313. The next prime is 11311531120361. The reversal of 11311531120356 is 65302113511311.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 440646 + ... + 4776738.

It is an arithmetic number, because the mean of its divisors is an integer number (553936008500).

Almost surely, 2^{11311531120356} is an apocalyptic number.

It is an amenable number.

11311531120356 is an abundant number, since it is smaller than the sum of its proper divisors (15277397287644).

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

11311531120356 is a wasteful number, since it uses less digits than its factorization.

11311531120356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4337708 (or 4337706 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 33.

Adding to 11311531120356 its reverse (65302113511311), we get a palindrome (76613644631667).

The spelling of 11311531120356 in words is "eleven trillion, three hundred eleven billion, five hundred thirty-one million, one hundred twenty thousand, three hundred fifty-six".