231424144 has 20 divisors (see below), whose sum is σ = 512439424. Its totient is φ = 99181728.

The previous prime is 231424139. The next prime is 231424153. The reversal of 231424144 is 441424132.

It is a super-2 number, since 2×231424144² = 107114268852265472, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1033032 + ... + 1033255.

Almost surely, 2^231424144 is an apocalyptic number.

It is an amenable number.

231424144 is an abundant number, since it is smaller than the sum of its proper divisors (281015280).

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

231424144 is a wasteful number, since it uses less digits than its factorization.

231424144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2066302 (or 2066296 counting only the distinct ones).

The product of its digits is 3072, while the sum is 25.

The square root of 231424144 is about 15212.6310676359. The cubic root of 231424144 is about 613.9545496460.

Adding to 231424144 its reverse (441424132), we get a palindrome (672848276).

The spelling of 231424144 in words is "two hundred thirty-one million, four hundred twenty-four thousand, one hundred forty-four".