231144378 has 8 divisors (see below), whose sum is σ = 462288768. Its totient is φ = 77048124.

The previous prime is 231144377. The next prime is 231144383. The reversal of 231144378 is 873441132.

231144378 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

231144378 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (231144373) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 19262026 + ... + 19262037.

It is an arithmetic number, because the mean of its divisors is an integer number (57786096).

Almost surely, 2^231144378 is an apocalyptic number.

231144378 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

231144378 is a wasteful number, since it uses less digits than its factorization.

231144378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38524068.

The product of its digits is 16128, while the sum is 33.

The square root of 231144378 is about 15203.4330991392. The cubic root of 231144378 is about 613.7070490086.

The spelling of 231144378 in words is "two hundred thirty-one million, one hundred forty-four thousand, three hundred seventy-eight".