1231832448 has 320 divisors, whose sum is σ = 4573451520. Its totient is φ = 319749120.

The previous prime is 1231832443. The next prime is 1231832467. The reversal of 1231832448 is 8442381321.

It is a happy number.

1231832448 is a `hidden beast` number, since 12 + 318 + 324 + 4 + 8 = 666.

It is a super-2 number, since 2×1231832448² = 3034822359891345408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231832443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 797565 + ... + 799107.

It is an arithmetic number, because the mean of its divisors is an integer number (14292036).

Almost surely, 2^1231832448 is an apocalyptic number.

1231832448 is a gapful number since it is divisible by the number (18) 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 1231832448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2286725760).

1231832448 is an abundant number, since it is smaller than the sum of its proper divisors (3341619072).

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

1231832448 is a wasteful number, since it uses less digits than its factorization.

1231832448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1587 (or 1566 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 1231832448 is about 35097.4706780987. The cubic root of 1231832448 is about 1071.9730816735.

The spelling of 1231832448 in words is "one billion, two hundred thirty-one million, eight hundred thirty-two thousand, four hundred forty-eight".