1230321011 has 4 divisors (see below), whose sum is σ = 1231678392. Its totient is φ = 1228963632.

The previous prime is 1230320983. The next prime is 1230321023. The reversal of 1230321011 is 1101230321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1230321011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230321311) 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, 677330 + ... + 679143.

It is an arithmetic number, because the mean of its divisors is an integer number (307919598).

Almost surely, 2^1230321011 is an apocalyptic number.

1230321011 is a deficient number, since it is larger than the sum of its proper divisors (1357381).

1230321011 is an equidigital number, since it uses as much as digits as its factorization.

1230321011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1357380.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1230321011 is about 35075.9320759976. The cubic root of 1230321011 is about 1071.5344714567.

Adding to 1230321011 its reverse (1101230321), we get a palindrome (2331551332).

The spelling of 1230321011 in words is "one billion, two hundred thirty million, three hundred twenty-one thousand, eleven".