1231103321 has 8 divisors (see below), whose sum is σ = 1408070400. Its totient is φ = 1054410048.

The previous prime is 1231103311. The next prime is 1231103417. The reversal of 1231103321 is 1233011321.

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

It is a cyclic number.

It is not a de Polignac number, because 1231103321 - 2¹⁸ = 1230841177 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1231103321.

It is not an unprimeable number, because it can be changed into a prime (1231103311) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 58721 + ... + 76878.

It is an arithmetic number, because the mean of its divisors is an integer number (176008800).

Almost surely, 2^1231103321 is an apocalyptic number.

It is an amenable number.

1231103321 is a deficient number, since it is larger than the sum of its proper divisors (176967079).

1231103321 is a wasteful number, since it uses less digits than its factorization.

1231103321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136903.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1231103321 is about 35087.0819675846. The cubic root of 1231103321 is about 1071.7615380823.

Adding to 1231103321 its reverse (1233011321), we get a palindrome (2464114642).

The spelling of 1231103321 in words is "one billion, two hundred thirty-one million, one hundred three thousand, three hundred twenty-one".