232331212021231 has 16 divisors (see below), whose sum is σ = 233062553090304. Its totient is φ = 231600985746624.

The previous prime is 232331212021229. The next prime is 232331212021267. The reversal of 232331212021231 is 132120212133232.

It is a cyclic number.

It is not a de Polignac number, because 232331212021231 - 2¹ = 232331212021229 is a prime.

It is a super-2 number, since 2×232331212021231² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 232331212021231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232331212021211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10117621756 + ... + 10117644718.

It is an arithmetic number, because the mean of its divisors is an integer number (14566409568144).

Almost surely, 2^{232331212021231} is an apocalyptic number.

232331212021231 is a deficient number, since it is larger than the sum of its proper divisors (731341069073).

232331212021231 is a wasteful number, since it uses less digits than its factorization.

232331212021231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45870.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 232331212021231 its reverse (132120212133232), we get a palindrome (364451424154463).

The spelling of 232331212021231 in words is "two hundred thirty-two trillion, three hundred thirty-one billion, two hundred twelve million, twenty-one thousand, two hundred thirty-one".