231448438 has 16 divisors (see below), whose sum is σ = 395871840. Its totient is φ = 100538496.

The previous prime is 231448417. The next prime is 231448463. The reversal of 231448438 is 834844132.

It is a junction number, because it is equal to n+sod(n) for n = 231448397 and 231448406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261378 + ... + 262261.

It is an arithmetic number, because the mean of its divisors is an integer number (24741990).

Almost surely, 2^231448438 is an apocalyptic number.

231448438 is a deficient number, since it is larger than the sum of its proper divisors (164423402).

231448438 is a wasteful number, since it uses less digits than its factorization.

231448438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523671.

The product of its digits is 73728, while the sum is 37.

The square root of 231448438 is about 15213.4295278875. The cubic root of 231448438 is about 613.9760324087.

The spelling of 231448438 in words is "two hundred thirty-one million, four hundred forty-eight thousand, four hundred thirty-eight".