231332422 has 4 divisors (see below), whose sum is σ = 346998636. Its totient is φ = 115666210.

The previous prime is 231332417. The next prime is 231332477. The reversal of 231332422 is 224233132.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 231332393 and 231332402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57833104 + ... + 57833107.

It is an arithmetic number, because the mean of its divisors is an integer number (86749659).

Almost surely, 2^231332422 is an apocalyptic number.

231332422 is a deficient number, since it is larger than the sum of its proper divisors (115666214).

231332422 is a wasteful number, since it uses less digits than its factorization.

231332422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115666213.

The product of its digits is 1728, while the sum is 22.

The square root of 231332422 is about 15209.6161029791. The cubic root of 231332422 is about 613.8734279164.

Adding to 231332422 its reverse (224233132), we get a palindrome (455565554).

The spelling of 231332422 in words is "two hundred thirty-one million, three hundred thirty-two thousand, four hundred twenty-two".