232121312231 has 8 divisors (see below), whose sum is σ = 232353819264. Its totient is φ = 231888866040.

The previous prime is 232121312167. The next prime is 232121312237. The reversal of 232121312231 is 132213121232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 232121312231 - 2⁶ = 232121312167 is a prime.

It is a super-2 number, since 2×232121312231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 232121312197 and 232121312206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232121312237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12481766 + ... + 12500348.

It is an arithmetic number, because the mean of its divisors is an integer number (29044227408).

Almost surely, 2^232121312231 is an apocalyptic number.

232121312231 is a deficient number, since it is larger than the sum of its proper divisors (232507033).

232121312231 is a wasteful number, since it uses less digits than its factorization.

232121312231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30421.

The product of its digits is 864, while the sum is 23.

Adding to 232121312231 its reverse (132213121232), we get a palindrome (364334433463).

The spelling of 232121312231 in words is "two hundred thirty-two billion, one hundred twenty-one million, three hundred twelve thousand, two hundred thirty-one".