231550424340020 has 96 divisors (see below), whose sum is σ = 489275330729472. Its totient is φ = 92047052160000.

The previous prime is 231550424339989. The next prime is 231550424340023. The reversal of 231550424340020 is 20043424055132.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231550424340023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3925152725 + ... + 3925211715.

It is an arithmetic number, because the mean of its divisors is an integer number (5096618028432).

Almost surely, 2^{231550424340020} is an apocalyptic number.

231550424340020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231550424340020 is an abundant number, since it is smaller than the sum of its proper divisors (257724906389452).

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

231550424340020 is a wasteful number, since it uses less digits than its factorization.

231550424340020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61113 (or 61111 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 231550424340020 its reverse (20043424055132), we get a palindrome (251593848395152).

The spelling of 231550424340020 in words is "two hundred thirty-one trillion, five hundred fifty billion, four hundred twenty-four million, three hundred forty thousand, twenty".