231223344 has 40 divisors (see below), whose sum is σ = 651630912. Its totient is φ = 70067520.

The previous prime is 231223297. The next prime is 231223373. The reversal of 231223344 is 443322132.

It is a Harshad number since it is a multiple of its sum of digits (24).

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218434 + ... + 219489.

Almost surely, 2^231223344 is an apocalyptic number.

231223344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

231223344 is an abundant number, since it is smaller than the sum of its proper divisors (420407568).

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

231223344 is a wasteful number, since it uses less digits than its factorization.

231223344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437945 (or 437939 counting only the distinct ones).

The product of its digits is 3456, while the sum is 24.

The square root of 231223344 is about 15206.0298566062. The cubic root of 231223344 is about 613.7769280940.

Adding to 231223344 its reverse (443322132), we get a palindrome (674545476).

The spelling of 231223344 in words is "two hundred thirty-one million, two hundred twenty-three thousand, three hundred forty-four".