1012330321 has 4 divisors (see below), whose sum is σ = 1033869312. Its totient is φ = 990791332.

The previous prime is 1012330271. The next prime is 1012330339. The reversal of 1012330321 is 1230332101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012330321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012330295 and 1012330304.

It is not an unprimeable number, because it can be changed into a prime (1012330021) 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, 10769425 + ... + 10769518.

It is an arithmetic number, because the mean of its divisors is an integer number (258467328).

Almost surely, 2^1012330321 is an apocalyptic number.

It is an amenable number.

1012330321 is a deficient number, since it is larger than the sum of its proper divisors (21538991).

1012330321 is an equidigital number, since it uses as much as digits as its factorization.

1012330321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21538990.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1012330321 is about 31817.1387934239. The cubic root of 1012330321 is about 1004.0933287976.

Adding to 1012330321 its reverse (1230332101), we get a palindrome (2242662422).

The spelling of 1012330321 in words is "one billion, twelve million, three hundred thirty thousand, three hundred twenty-one".