3111234001721 has 2 divisors, whose sum is σ = 3111234001722. Its totient is φ = 3111234001720.

The previous prime is 3111234001669. The next prime is 3111234001739. The reversal of 3111234001721 is 1271004321113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2467726810000 + 643507191721 = 1570900^2 + 802189^2 .

It is a cyclic number.

It is not a de Polignac number, because 3111234001721 - 2²² = 3111229807417 is a prime.

It is not a weakly prime, because it can be changed into another prime (3111234001321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1555617000860 + 1555617000861.

It is an arithmetic number, because the mean of its divisors is an integer number (1555617000861).

Almost surely, 2^{3111234001721} is an apocalyptic number.

It is an amenable number.

3111234001721 is a deficient number, since it is larger than the sum of its proper divisors (1).

3111234001721 is an equidigital number, since it uses as much as digits as its factorization.

3111234001721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 26.

Adding to 3111234001721 its reverse (1271004321113), we get a palindrome (4382238322834).

The spelling of 3111234001721 in words is "three trillion, one hundred eleven billion, two hundred thirty-four million, one thousand, seven hundred twenty-one".