231311233232 has 20 divisors (see below), whose sum is σ = 452131584420. Its totient is φ = 114632114688.

The previous prime is 231311233229. The next prime is 231311233253. The reversal of 231311233232 is 232332113132.

231311233232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10659323536 + 220651909696 = 103244^2 + 469736^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63967007 + ... + 63970622.

It is an arithmetic number, because the mean of its divisors is an integer number (22606579221).

Almost surely, 2^231311233232 is an apocalyptic number.

It is an amenable number.

231311233232 is a deficient number, since it is larger than the sum of its proper divisors (220820351188).

231311233232 is a wasteful number, since it uses less digits than its factorization.

231311233232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127937750 (or 127937744 counting only the distinct ones).

The product of its digits is 3888, while the sum is 26.

Adding to 231311233232 its reverse (232332113132), we get a palindrome (463643346364).

The spelling of 231311233232 in words is "two hundred thirty-one billion, three hundred eleven million, two hundred thirty-three thousand, two hundred thirty-two".