231993285552 has 240 divisors, whose sum is σ = 801694670400. Its totient is φ = 62384523264.

The previous prime is 231993285533. The next prime is 231993285583. The reversal of 231993285552 is 255582399132.

231993285552 is a `hidden beast` number, since 2 + 3 + 1 + 9 + 9 + 3 + 2 + 85 + 552 = 666.

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 47 ways as a sum of consecutive naturals, for example, 701518 + ... + 977810.

It is an arithmetic number, because the mean of its divisors is an integer number (3340394460).

Almost surely, 2^231993285552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231993285552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (400847335200).

231993285552 is an abundant number, since it is smaller than the sum of its proper divisors (569701384848).

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

231993285552 is a wasteful number, since it uses less digits than its factorization.

231993285552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276345 (or 276322 counting only the distinct ones).

The product of its digits is 5832000, while the sum is 54.

The spelling of 231993285552 in words is "two hundred thirty-one billion, nine hundred ninety-three million, two hundred eighty-five thousand, five hundred fifty-two".