231223445 has 8 divisors (see below), whose sum is σ = 292071840. Its totient is φ = 175242960.

The previous prime is 231223423. The next prime is 231223463. The reversal of 231223445 is 544322132.

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

It is not a de Polignac number, because 231223445 - 2⁶ = 231223381 is a prime.

It is a congruent number.

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, 1216871 + ... + 1217060.

It is an arithmetic number, because the mean of its divisors is an integer number (36508980).

Almost surely, 2^231223445 is an apocalyptic number.

It is an amenable number.

231223445 is a deficient number, since it is larger than the sum of its proper divisors (60848395).

231223445 is a wasteful number, since it uses less digits than its factorization.

231223445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2433955.

The product of its digits is 5760, while the sum is 26.

The square root of 231223445 is about 15206.0331776568. The cubic root of 231223445 is about 613.7770174614. Note that the first 3 decimals are identical.

Adding to 231223445 its reverse (544322132), we get a palindrome (775545577).

The spelling of 231223445 in words is "two hundred thirty-one million, two hundred twenty-three thousand, four hundred forty-five".