231550550205240 has 384 divisors, whose sum is σ = 837517618555200. Its totient is φ = 51022971740160.

The previous prime is 231550550205137. The next prime is 231550550205263. The reversal of 231550550205240 is 42502055055132.

It is a super-2 number, since 2×231550550205240² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 18831900 + ... + 28596180.

Almost surely, 2^{231550550205240} is an apocalyptic number.

231550550205240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231550550205240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (418758809277600).

231550550205240 is an abundant number, since it is smaller than the sum of its proper divisors (605967068349960).

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

231550550205240 is a wasteful number, since it uses less digits than its factorization.

231550550205240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9764455 (or 9764444 counting only the distinct ones).

The product of its (nonzero) digits is 300000, while the sum is 39.

The spelling of 231550550205240 in words is "two hundred thirty-one trillion, five hundred fifty billion, five hundred fifty million, two hundred five thousand, two hundred forty".