3112001111111 has 4 divisors (see below), whose sum is σ = 3154631263392. Its totient is φ = 3069370958832.

The previous prime is 3112001111083. The next prime is 3112001111119. The reversal of 3112001111111 is 1111111002113.

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-3112001111111 is a prime.

It is a Duffinian number.

3112001111111 is a modest number, since divided by 1111111 gives 311200 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3112001111119) 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, 21315076031 + ... + 21315076176.

It is an arithmetic number, because the mean of its divisors is an integer number (788657815848).

Almost surely, 2^{3112001111111} is an apocalyptic number.

3112001111111 is a deficient number, since it is larger than the sum of its proper divisors (42630152281).

3112001111111 is an equidigital number, since it uses as much as digits as its factorization.

3112001111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42630152280.

The product of its (nonzero) digits is 6, while the sum is 14.

Adding to 3112001111111 its reverse (1111111002113), we get a palindrome (4223112113224).

The spelling of 3112001111111 in words is "three trillion, one hundred twelve billion, one million, one hundred eleven thousand, one hundred eleven".