231481544448 has 864 divisors, whose sum is σ = 837112776192. Its totient is φ = 56013619200.

The previous prime is 231481544443. The next prime is 231481544461. The reversal of 231481544448 is 844445184132.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 231481544397 and 231481544406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231481544443) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 390356440 + ... + 390357032.

It is an arithmetic number, because the mean of its divisors is an integer number (968880528).

Almost surely, 2^231481544448 is an apocalyptic number.

231481544448 is a gapful number since it is divisible by the number (28) 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 231481544448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (418556388096).

231481544448 is an abundant number, since it is smaller than the sum of its proper divisors (605631231744).

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

231481544448 is a wasteful number, since it uses less digits than its factorization.

231481544448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701 (or 680 counting only the distinct ones).

The product of its digits is 1966080, while the sum is 48.

The spelling of 231481544448 in words is "two hundred thirty-one billion, four hundred eighty-one million, five hundred forty-four thousand, four hundred forty-eight".