231021322 has 8 divisors (see below), whose sum is σ = 396036576. Its totient is φ = 99009132.

The previous prime is 231021317. The next prime is 231021353. The reversal of 231021322 is 223120132.

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 = 231021296 and 231021305.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8250748 + ... + 8250775.

It is an arithmetic number, because the mean of its divisors is an integer number (49504572).

Almost surely, 2^231021322 is an apocalyptic number.

231021322 is a deficient number, since it is larger than the sum of its proper divisors (165015254).

231021322 is a wasteful number, since it uses less digits than its factorization.

231021322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16501532.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 231021322 is about 15199.3855796871. The cubic root of 231021322 is about 613.5981217932.

Adding to 231021322 its reverse (223120132), we get a palindrome (454141454).

It can be divided in two parts, 2310 and 21322, that added together give a palindrome (23632).

The spelling of 231021322 in words is "two hundred thirty-one million, twenty-one thousand, three hundred twenty-two".