4121531213 has 2 divisors, whose sum is σ = 4121531214. Its totient is φ = 4121531212.

The previous prime is 4121531203. The next prime is 4121531233. The reversal of 4121531213 is 3121351214.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3796161769 + 325369444 = 61613^2 + 18038^2 .

It is a cyclic number.

It is not a de Polignac number, because 4121531213 - 2¹² = 4121527117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4121531203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2060765606 + 2060765607.

It is an arithmetic number, because the mean of its divisors is an integer number (2060765607).

Almost surely, 2^4121531213 is an apocalyptic number.

It is an amenable number.

4121531213 is a deficient number, since it is larger than the sum of its proper divisors (1).

4121531213 is an equidigital number, since it uses as much as digits as its factorization.

4121531213 is an evil number, because the sum of its binary digits is even.

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

The square root of 4121531213 is about 64199.1527436305. The cubic root of 4121531213 is about 1603.3174933373.

Adding to 4121531213 its reverse (3121351214), we get a palindrome (7242882427).

The spelling of 4121531213 in words is "four billion, one hundred twenty-one million, five hundred thirty-one thousand, two hundred thirteen".