231531532442334 has 96 divisors (see below), whose sum is σ = 547639125755904. Its totient is φ = 70488755525760.

The previous prime is 231531532442269. The next prime is 231531532442347. The reversal of 231531532442334 is 433244235135132.

231531532442334 is a `hidden beast` number, since 2 + 3 + 1 + 5 + 315 + 324 + 4 + 2 + 3 + 3 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 231531532442334.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 144312474 + ... + 145908029.

It is an arithmetic number, because the mean of its divisors is an integer number (5704574226624).

Almost surely, 2^{231531532442334} is an apocalyptic number.

231531532442334 is an abundant number, since it is smaller than the sum of its proper divisors (316107593313570).

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

231531532442334 is a wasteful number, since it uses less digits than its factorization.

231531532442334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290220622 (or 290220619 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 45.

Adding to 231531532442334 its reverse (433244235135132), we get a palindrome (664775767577466).

The spelling of 231531532442334 in words is "two hundred thirty-one trillion, five hundred thirty-one billion, five hundred thirty-two million, four hundred forty-two thousand, three hundred thirty-four".