321140235011 has 4 divisors (see below), whose sum is σ = 321598353024. Its totient is φ = 320682117000.

The previous prime is 321140234993. The next prime is 321140235041. The reversal of 321140235011 is 110532041123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110532041123 = 7 ⋅15790291589.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321140235011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321140235041) 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, 229057955 + ... + 229059356.

It is an arithmetic number, because the mean of its divisors is an integer number (80399588256).

Almost surely, 2^321140235011 is an apocalyptic number.

321140235011 is a deficient number, since it is larger than the sum of its proper divisors (458118013).

321140235011 is an equidigital number, since it uses as much as digits as its factorization.

321140235011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458118012.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 321140235011 its reverse (110532041123), we get a palindrome (431672276134).

The spelling of 321140235011 in words is "three hundred twenty-one billion, one hundred forty million, two hundred thirty-five thousand, eleven".