231223436 has 12 divisors (see below), whose sum is σ = 414510600. Its totient is φ = 112791840.

The previous prime is 231223423. The next prime is 231223463. The reversal of 231223436 is 634322132.

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, 704786 + ... + 705113.

It is an arithmetic number, because the mean of its divisors is an integer number (34542550).

Almost surely, 2^231223436 is an apocalyptic number.

It is an amenable number.

231223436 is a deficient number, since it is larger than the sum of its proper divisors (183287164).

231223436 is a wasteful number, since it uses less digits than its factorization.

231223436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409944 (or 1409942 counting only the distinct ones).

The product of its digits is 5184, while the sum is 26.

The square root of 231223436 is about 15206.0328817216. The cubic root of 231223436 is about 613.7770094980. Note that the first 3 decimals are identical.

Adding to 231223436 its reverse (634322132), we get a palindrome (865545568).

The spelling of 231223436 in words is "two hundred thirty-one million, two hundred twenty-three thousand, four hundred thirty-six".