1321323112 has 16 divisors (see below), whose sum is σ = 2478268800. Its totient is φ = 660451440.

The previous prime is 1321323097. The next prime is 1321323119. The reversal of 1321323112 is 2113231231.

It is a self number, because there is not a number n which added to its sum of digits gives 1321323112.

It is not an unprimeable number, because it can be changed into a prime (1321323119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2287 + ... + 51457.

It is an arithmetic number, because the mean of its divisors is an integer number (154891800).

Almost surely, 2^1321323112 is an apocalyptic number.

It is an amenable number.

1321323112 is a deficient number, since it is larger than the sum of its proper divisors (1156945688).

1321323112 is a wasteful number, since it uses less digits than its factorization.

1321323112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52536 (or 52532 counting only the distinct ones).

The product of its digits is 216, while the sum is 19.

The square root of 1321323112 is about 36350.0084181558. The cubic root of 1321323112 is about 1097.3277039213.

Adding to 1321323112 its reverse (2113231231), we get a palindrome (3434554343).

The spelling of 1321323112 in words is "one billion, three hundred twenty-one million, three hundred twenty-three thousand, one hundred twelve".