11312313140 has 12 divisors (see below), whose sum is σ = 23755857636. Its totient is φ = 4524925248.

The previous prime is 11312313097. The next prime is 11312313143. The reversal of 11312313140 is 4131321311.

It can be written as a sum of positive squares in 2 ways, for example, as 2319963556 + 8992349584 = 48166^2 + 94828^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 565615657 = 11312313140 / (1 + 1 + 3 + 1 + 2 + 3 + 1 + 3 + 1 + 4 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11312313143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282807809 + ... + 282807848.

It is an arithmetic number, because the mean of its divisors is an integer number (1979654803).

Almost surely, 2^11312313140 is an apocalyptic number.

11312313140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11312313140 is an abundant number, since it is smaller than the sum of its proper divisors (12443544496).

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

11312313140 is a wasteful number, since it uses less digits than its factorization.

11312313140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565615666 (or 565615664 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 11312313140 its reverse (4131321311), we get a palindrome (15443634451).

The spelling of 11312313140 in words is "eleven billion, three hundred twelve million, three hundred thirteen thousand, one hundred forty".