231321021021232 has 40 divisors (see below), whose sum is σ = 451235541510000. Its totient is φ = 114873287692032.

The previous prime is 231321021021191. The next prime is 231321021021241. The reversal of 231321021021232 is 232120120123132.

It is a junction number, because it is equal to n+sod(n) for n = 231321021021197 and 231321021021206.

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 7 ways as a sum of consecutive naturals, for example, 20346519 + ... + 29607817.

It is an arithmetic number, because the mean of its divisors is an integer number (11280888537750).

Almost surely, 2^{231321021021232} is an apocalyptic number.

It is an amenable number.

231321021021232 is a deficient number, since it is larger than the sum of its proper divisors (219914520488768).

231321021021232 is a wasteful number, since it uses less digits than its factorization.

231321021021232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9271933 (or 9271927 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 231321021021232 its reverse (232120120123132), we get a palindrome (463441141144364).

The spelling of 231321021021232 in words is "two hundred thirty-one trillion, three hundred twenty-one billion, twenty-one million, twenty-one thousand, two hundred thirty-two".