131011231140 has 96 divisors (see below), whose sum is σ = 421645392000. Its totient is φ = 33731623296.

The previous prime is 131011231139. The next prime is 131011231151. The reversal of 131011231140 is 41132110131.

It is a happy number.

131011231140 is a `hidden beast` number, since 1 + 310 + 1 + 1 + 2 + 311 + 40 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4167330 + ... + 4198649.

It is an arithmetic number, because the mean of its divisors is an integer number (4392139500).

Almost surely, 2^131011231140 is an apocalyptic number.

131011231140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131011231140 is an abundant number, since it is smaller than the sum of its proper divisors (290634160860).

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

131011231140 is a wasteful number, since it uses less digits than its factorization.

131011231140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8366026 (or 8366018 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 131011231140 its reverse (41132110131), we get a palindrome (172143341271).

The spelling of 131011231140 in words is "one hundred thirty-one billion, eleven million, two hundred thirty-one thousand, one hundred forty".