231221320332342 has 8 divisors (see below), whose sum is σ = 462442640664696. Its totient is φ = 77073773444112.

The previous prime is 231221320332323. The next prime is 231221320332371. The reversal of 231221320332342 is 243233023122132.

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

231221320332342 is an admirable number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 19268443361023 + ... + 19268443361034.

It is an arithmetic number, because the mean of its divisors is an integer number (57805330083087).

Almost surely, 2^{231221320332342} is an apocalyptic number.

231221320332342 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231221320332342 is a wasteful number, since it uses less digits than its factorization.

231221320332342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38536886722062.

The product of its (nonzero) digits is 62208, while the sum is 33.

Adding to 231221320332342 its reverse (243233023122132), we get a palindrome (474454343454474).

The spelling of 231221320332342 in words is "two hundred thirty-one trillion, two hundred twenty-one billion, three hundred twenty million, three hundred thirty-two thousand, three hundred forty-two".