231210021021332 has 24 divisors (see below), whose sum is σ = 409596109104000. Its totient is φ = 114188331864096.

The previous prime is 231210021021281. The next prime is 231210021021337. The reversal of 231210021021332 is 233120120012132.

It is a junction number, because it is equal to n+sod(n) for n = 231210021021298 and 231210021021307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231210021021337) by changing a digit.

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, 721162832 + ... + 721483367.

It is an arithmetic number, because the mean of its divisors is an integer number (17066504546000).

Almost surely, 2^{231210021021332} is an apocalyptic number.

It is an amenable number.

231210021021332 is a deficient number, since it is larger than the sum of its proper divisors (178386088082668).

231210021021332 is a wasteful number, since it uses less digits than its factorization.

231210021021332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1442646695 (or 1442646693 counting only the distinct ones).

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

Adding to 231210021021332 its reverse (233120120012132), we get a palindrome (464330141033464).

The spelling of 231210021021332 in words is "two hundred thirty-one trillion, two hundred ten billion, twenty-one million, twenty-one thousand, three hundred thirty-two".