201231322131340 has 24 divisors (see below), whose sum is σ = 422964098614512. Its totient is φ = 80420467492800.

The previous prime is 201231322131331. The next prime is 201231322131403. The reversal of 201231322131340 is 43131223132102.

It is a junction number, because it is equal to n+sod(n) for n = 201231322131299 and 201231322131308.

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 7 ways as a sum of consecutive naturals, for example, 4503812086 + ... + 4503856765.

It is an arithmetic number, because the mean of its divisors is an integer number (17623504108938).

Almost surely, 2^{201231322131340} is an apocalyptic number.

201231322131340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201231322131340 is an abundant number, since it is smaller than the sum of its proper divisors (221732776483172).

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

201231322131340 is a wasteful number, since it uses less digits than its factorization.

201231322131340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9007669977 (or 9007669975 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 201231322131340 its reverse (43131223132102), we get a palindrome (244362545263442).

The spelling of 201231322131340 in words is "two hundred one trillion, two hundred thirty-one billion, three hundred twenty-two million, one hundred thirty-one thousand, three hundred forty".