231234105312 has 72 divisors (see below), whose sum is σ = 751510848816. Its totient is φ = 66066886656.

The previous prime is 231234105269. The next prime is 231234105313. The reversal of 231234105312 is 213501432132.

231234105312 is a `hidden beast` number, since 2 + 3 + 1 + 2 + 341 + 0 + 5 + 312 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×231234105312² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231234105313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57347713 + ... + 57351744.

It is an arithmetic number, because the mean of its divisors is an integer number (10437650678).

Almost surely, 2^231234105312 is an apocalyptic number.

It is an amenable number.

231234105312 is an abundant number, since it is smaller than the sum of its proper divisors (520276743504).

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

231234105312 is a wasteful number, since it uses less digits than its factorization.

231234105312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114699480 (or 114699469 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 231234105312 its reverse (213501432132), we get a palindrome (444735537444).

The spelling of 231234105312 in words is "two hundred thirty-one billion, two hundred thirty-four million, one hundred five thousand, three hundred twelve".