3111123231201 has 4 divisors (see below), whose sum is σ = 4148164308272. Its totient is φ = 2074082154132.

The previous prime is 3111123231137. The next prime is 3111123231211. The reversal of 3111123231201 is 1021323211113.

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 not a de Polignac number, because 3111123231201 - 2⁶ = 3111123231137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3111123231211) 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, 518520538531 + ... + 518520538536.

It is an arithmetic number, because the mean of its divisors is an integer number (1037041077068).

Almost surely, 2^{3111123231201} is an apocalyptic number.

It is an amenable number.

3111123231201 is a deficient number, since it is larger than the sum of its proper divisors (1037041077071).

3111123231201 is a wasteful number, since it uses less digits than its factorization.

3111123231201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037041077070.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 3111123231201 its reverse (1021323211113), we get a palindrome (4132446442314).

The spelling of 3111123231201 in words is "three trillion, one hundred eleven billion, one hundred twenty-three million, two hundred thirty-one thousand, two hundred one".