231342444 has 36 divisors (see below), whose sum is σ = 585541320. Its totient is φ = 77014080.

The previous prime is 231342437. The next prime is 231342457. The reversal of 231342444 is 444243132.

It is a happy number.

231342444 is a `hidden beast` number, since 231 + 3 + 424 + 4 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 27184 + ... + 34664.

Almost surely, 2^231342444 is an apocalyptic number.

It is an amenable number.

231342444 is an abundant number, since it is smaller than the sum of its proper divisors (354198876).

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

231342444 is a wasteful number, since it uses less digits than its factorization.

231342444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8350 (or 8345 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 231342444 is about 15209.9455620328. The cubic root of 231342444 is about 613.8822927217.

Adding to 231342444 its reverse (444243132), we get a palindrome (675585576).

The spelling of 231342444 in words is "two hundred thirty-one million, three hundred forty-two thousand, four hundred forty-four".