231342032240 has 80 divisors (see below), whose sum is σ = 587219379840. Its totient is φ = 84059592960.

The previous prime is 231342032203. The next prime is 231342032269. The reversal of 231342032240 is 42230243132.

It is a tau number, because it is divible by the number of its divisors (80).

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, 1049591 + ... + 1250729.

It is an arithmetic number, because the mean of its divisors is an integer number (7340242248).

Almost surely, 2^231342032240 is an apocalyptic number.

231342032240 is a gapful number since it is divisible by the number (20) 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 231342032240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293609689920).

231342032240 is an abundant number, since it is smaller than the sum of its proper divisors (355877347600).

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

231342032240 is a wasteful number, since it uses less digits than its factorization.

231342032240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202470 (or 202464 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 231342032240 its reverse (42230243132), we get a palindrome (273572275372).

The spelling of 231342032240 in words is "two hundred thirty-one billion, three hundred forty-two million, thirty-two thousand, two hundred forty".