3121230123013 has 2 divisors, whose sum is σ = 3121230123014. Its totient is φ = 3121230123012.

The previous prime is 3121230123001. The next prime is 3121230123017. The reversal of 3121230123013 is 3103210321213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1592033250564 + 1529196872449 = 1261758^2 + 1236607^2 .

It is a cyclic number.

It is not a de Polignac number, because 3121230123013 - 2⁵ = 3121230122981 is a prime.

It is a super-2 number, since 2×3121230123013² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3121230123017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560615061506 + 1560615061507.

It is an arithmetic number, because the mean of its divisors is an integer number (1560615061507).

Almost surely, 2^{3121230123013} is an apocalyptic number.

It is an amenable number.

3121230123013 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121230123013 is an equidigital number, since it uses as much as digits as its factorization.

3121230123013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 3121230123013 its reverse (3103210321213), we get a palindrome (6224440444226).

The spelling of 3121230123013 in words is "three trillion, one hundred twenty-one billion, two hundred thirty million, one hundred twenty-three thousand, thirteen".