231033443432 has 64 divisors (see below), whose sum is σ = 477290880000. Its totient is φ = 103969528000.

The previous prime is 231033443387. The next prime is 231033443437. The reversal of 231033443432 is 234344330132.

It is not an unprimeable number, because it can be changed into a prime (231033443437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4945319 + ... + 4991817.

It is an arithmetic number, because the mean of its divisors is an integer number (7457670000).

Almost surely, 2^231033443432 is an apocalyptic number.

231033443432 is a gapful number since it is divisible by the number (22) 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 231033443432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238645440000).

231033443432 is an abundant number, since it is smaller than the sum of its proper divisors (246257436568).

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

231033443432 is a wasteful number, since it uses less digits than its factorization.

231033443432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47078 (or 47074 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 32.

Adding to 231033443432 its reverse (234344330132), we get a palindrome (465377773564).

The spelling of 231033443432 in words is "two hundred thirty-one billion, thirty-three million, four hundred forty-three thousand, four hundred thirty-two".