231421033344 has 128 divisors (see below), whose sum is σ = 634874895360. Its totient is φ = 74612736000.

The previous prime is 231421033321. The next prime is 231421033369. The reversal of 231421033344 is 443330124132.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30125184 + ... + 30132864.

It is an arithmetic number, because the mean of its divisors is an integer number (4959960120).

Almost surely, 2^231421033344 is an apocalyptic number.

231421033344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231421033344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317437447680).

231421033344 is an abundant number, since it is smaller than the sum of its proper divisors (403453862016).

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

231421033344 is a wasteful number, since it uses less digits than its factorization.

231421033344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10260 (or 10248 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 231421033344 its reverse (443330124132), we get a palindrome (674751157476).

The spelling of 231421033344 in words is "two hundred thirty-one billion, four hundred twenty-one million, thirty-three thousand, three hundred forty-four".