231899648 has 30 divisors (see below), whose sum is σ = 464035869. Its totient is φ = 115777536.

The previous prime is 231899621. The next prime is 231899651. The reversal of 231899648 is 846998132.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 224760064 + 7139584 = 14992^2 + 2672^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=10768.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231899596 and 231899605.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 344240 + ... + 344912.

Almost surely, 2^231899648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231899648

231899648 is an abundant number, since it is smaller than the sum of its proper divisors (232136221).

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

231899648 is an frugal number, since it uses more digits than its factorization.

231899648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364 (or 675 counting only the distinct ones).

The product of its digits is 746496, while the sum is 50.

The square root of 231899648 is about 15228.2516396335. The cubic root of 231899648 is about 614.3747566307.

Multiplying 231899648 by its sum of digits (50), we get a square (11594982400 = 107680²).

The spelling of 231899648 in words is "two hundred thirty-one million, eight hundred ninety-nine thousand, six hundred forty-eight".