231444342440 has 16 divisors (see below), whose sum is σ = 520749770580. Its totient is φ = 92577736960.

The previous prime is 231444342433. The next prime is 231444342487. The reversal of 231444342440 is 44243444132.

231444342440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 228650374276 + 2793968164 = 478174^2 + 52858^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 231444342440.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2893054241 + ... + 2893054320.

Almost surely, 2^231444342440 is an apocalyptic number.

231444342440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231444342440 is an abundant number, since it is smaller than the sum of its proper divisors (289305428140).

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

231444342440 is a wasteful number, since it uses less digits than its factorization.

231444342440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5786108572 (or 5786108568 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 35.

Adding to 231444342440 its reverse (44243444132), we get a palindrome (275687786572).

The spelling of 231444342440 in words is "two hundred thirty-one billion, four hundred forty-four million, three hundred forty-two thousand, four hundred forty".