231313240432 has 20 divisors (see below), whose sum is σ = 459100365696. Its totient is φ = 112835726720.

The previous prime is 231313240409. The next prime is 231313240441. The reversal of 231313240432 is 234042313132.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 231313240432.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176305168 + ... + 176306479.

Almost surely, 2^231313240432 is an apocalyptic number.

It is an amenable number.

231313240432 is a deficient number, since it is larger than the sum of its proper divisors (227787125264).

231313240432 is a wasteful number, since it uses less digits than its factorization.

231313240432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352611696 (or 352611690 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 231313240432 its reverse (234042313132), we get a palindrome (465355553564).

The spelling of 231313240432 in words is "two hundred thirty-one billion, three hundred thirteen million, two hundred forty thousand, four hundred thirty-two".