3121344113 has 2 divisors, whose sum is σ = 3121344114. Its totient is φ = 3121344112.

The previous prime is 3121344077. The next prime is 3121344131. The reversal of 3121344113 is 3114431213.

Together with next prime (3121344131) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2027520784 + 1093823329 = 45028^2 + 33073^2 .

It is a cyclic number.

It is not a de Polignac number, because 3121344113 - 2⁶ = 3121344049 is a prime.

It is not a weakly prime, because it can be changed into another prime (3121344133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560672056 + 1560672057.

It is an arithmetic number, because the mean of its divisors is an integer number (1560672057).

Almost surely, 2^3121344113 is an apocalyptic number.

It is an amenable number.

3121344113 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121344113 is an equidigital number, since it uses as much as digits as its factorization.

3121344113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 23.

The square root of 3121344113 is about 55868.9906209160. The cubic root of 3121344113 is about 1461.4385197845.

Adding to 3121344113 its reverse (3114431213), we get a palindrome (6235775326).

The spelling of 3121344113 in words is "three billion, one hundred twenty-one million, three hundred forty-four thousand, one hundred thirteen".