231221333310064 has 20 divisors (see below), whose sum is σ = 474343764658704. Its totient is φ = 108810039204608.

The previous prime is 231221333310053. The next prime is 231221333310103. The reversal of 231221333310064 is 460013333122132.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 425039215372 + ... + 425039215915.

Almost surely, 2^{231221333310064} is an apocalyptic number.

It is an amenable number.

231221333310064 is an abundant number, since it is smaller than the sum of its proper divisors (243122431348640).

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

231221333310064 is a wasteful number, since it uses less digits than its factorization.

231221333310064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850078431312 (or 850078431306 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 34.

Adding to 231221333310064 its reverse (460013333122132), we get a palindrome (691234666432196).

The spelling of 231221333310064 in words is "two hundred thirty-one trillion, two hundred twenty-one billion, three hundred thirty-three million, three hundred ten thousand, sixty-four".