231222304322440 has 32 divisors (see below), whose sum is σ = 529067984472000. Its totient is φ = 90921312885184.

The previous prime is 231222304322423. The next prime is 231222304322491. The reversal of 231222304322440 is 44223403222132.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 231222304322396 and 231222304322405.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48987773980 + ... + 48987778699.

It is an arithmetic number, because the mean of its divisors is an integer number (16533374514750).

Almost surely, 2^{231222304322440} is an apocalyptic number.

231222304322440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231222304322440 is an abundant number, since it is smaller than the sum of its proper divisors (297845680149560).

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

231222304322440 is a wasteful number, since it uses less digits than its factorization.

231222304322440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97975552749 (or 97975552745 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 34.

Adding to 231222304322440 its reverse (44223403222132), we get a palindrome (275445707544572).

The spelling of 231222304322440 in words is "two hundred thirty-one trillion, two hundred twenty-two billion, three hundred four million, three hundred twenty-two thousand, four hundred forty".