321240011 has 24 divisors (see below), whose sum is σ = 365245440. Its totient is φ = 281437200.

The previous prime is 321239999. The next prime is 321240019. The reversal of 321240011 is 110042123.

It is a de Polignac number, because none of the positive numbers 2^k-321240011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321240019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 311066 + ... + 312096.

It is an arithmetic number, because the mean of its divisors is an integer number (15218560).

Almost surely, 2^321240011 is an apocalyptic number.

321240011 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

321240011 is a deficient number, since it is larger than the sum of its proper divisors (44005429).

321240011 is a wasteful number, since it uses less digits than its factorization.

321240011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1127 (or 1104 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 321240011 is about 17923.1696694530. The cubic root of 321240011 is about 684.8727353392.

Adding to 321240011 its reverse (110042123), we get a palindrome (431282134).

The spelling of 321240011 in words is "three hundred twenty-one million, two hundred forty thousand, eleven".