3111031212001 has 2 divisors, whose sum is σ = 3111031212002. Its totient is φ = 3111031212000.

The previous prime is 3111031211993. The next prime is 3111031212031. The reversal of 3111031212001 is 1002121301113.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3110919888400 + 111323601 = 1763780^2 + 10551^2 .

It is a cyclic number.

It is not a de Polignac number, because 3111031212001 - 2³ = 3111031211993 is a prime.

It is a super-2 number, since 2×3111031212001² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3111031212031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1555515606000 + 1555515606001.

It is an arithmetic number, because the mean of its divisors is an integer number (1555515606001).

Almost surely, 2^{3111031212001} is an apocalyptic number.

It is an amenable number.

3111031212001 is a deficient number, since it is larger than the sum of its proper divisors (1).

3111031212001 is an equidigital number, since it uses as much as digits as its factorization.

3111031212001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 3111031212001 its reverse (1002121301113), we get a palindrome (4113152513114).

The spelling of 3111031212001 in words is "three trillion, one hundred eleven billion, thirty-one million, two hundred twelve thousand, one".