231440422 has 8 divisors (see below), whose sum is σ = 347742000. Its totient is φ = 115526424.

The previous prime is 231440413. The next prime is 231440497. The reversal of 231440422 is 224044132.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 231440393 and 231440402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95397 + ... + 97792.

It is an arithmetic number, because the mean of its divisors is an integer number (43467750).

Almost surely, 2^231440422 is an apocalyptic number.

231440422 is a deficient number, since it is larger than the sum of its proper divisors (116301578).

231440422 is a wasteful number, since it uses less digits than its factorization.

231440422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193790.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 231440422 is about 15213.1660741609. The cubic root of 231440422 is about 613.9689441652.

Adding to 231440422 its reverse (224044132), we get a palindrome (455484554).

The spelling of 231440422 in words is "two hundred thirty-one million, four hundred forty thousand, four hundred twenty-two".