3121142393 has 2 divisors, whose sum is σ = 3121142394. Its totient is φ = 3121142392.

The previous prime is 3121142383. The next prime is 3121142399. The reversal of 3121142393 is 3932411213.

3121142393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2690704384 + 430438009 = 51872^2 + 20747^2 .

It is a cyclic number.

It is not a de Polignac number, because 3121142393 - 2⁶ = 3121142329 is a prime.

It is not a weakly prime, because it can be changed into another prime (3121142399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560571196 + 1560571197.

It is an arithmetic number, because the mean of its divisors is an integer number (1560571197).

Almost surely, 2^3121142393 is an apocalyptic number.

It is an amenable number.

3121142393 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121142393 is an equidigital number, since it uses as much as digits as its factorization.

3121142393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 29.

The square root of 3121142393 is about 55867.1852969165. The cubic root of 3121142393 is about 1461.4070367953.

The spelling of 3121142393 in words is "three billion, one hundred twenty-one million, one hundred forty-two thousand, three hundred ninety-three".