201231131232120 has 128 divisors (see below), whose sum is σ = 659087925200640. Its totient is φ = 48745281290240.

The previous prime is 201231131232107. The next prime is 201231131232121. The reversal of 201231131232120 is 21232131132102.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201231131232121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57717129 + ... + 61104248.

It is an arithmetic number, because the mean of its divisors is an integer number (5149124415630).

Almost surely, 2^{201231131232120} is an apocalyptic number.

201231131232120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201231131232120 is an abundant number, since it is smaller than the sum of its proper divisors (457856793968520).

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

201231131232120 is a wasteful number, since it uses less digits than its factorization.

201231131232120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118822685 (or 118822681 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 201231131232120 its reverse (21232131132102), we get a palindrome (222463262364222).

The spelling of 201231131232120 in words is "two hundred one trillion, two hundred thirty-one billion, one hundred thirty-one million, two hundred thirty-two thousand, one hundred twenty".