231313444 has 12 divisors (see below), whose sum is σ = 417856768. Its totient is φ = 111925800.

The previous prime is 231313417. The next prime is 231313457. The reversal of 231313444 is 444313132.

It is a super-2 number, since 2×231313444² = 107011818750282272, 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, 932592 + ... + 932839.

Almost surely, 2^231313444 is an apocalyptic number.

It is an amenable number.

231313444 is a deficient number, since it is larger than the sum of its proper divisors (186543324).

231313444 is a wasteful number, since it uses less digits than its factorization.

231313444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1865466 (or 1865464 counting only the distinct ones).

The product of its digits is 3456, while the sum is 25.

The square root of 231313444 is about 15208.9922085587. The cubic root of 231313444 is about 613.8566405181.

Adding to 231313444 its reverse (444313132), we get a palindrome (675626576).

The spelling of 231313444 in words is "two hundred thirty-one million, three hundred thirteen thousand, four hundred forty-four".