123141520031 has 2 divisors, whose sum is σ = 123141520032. Its totient is φ = 123141520030.

The previous prime is 123141520003. The next prime is 123141520057. The reversal of 123141520031 is 130025141321.

It is a strong prime.

It is an emirp because it is prime and its reverse (130025141321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123141520031 - 2¹⁸ = 123141257887 is a prime.

It is a super-2 number, since 2×123141520031² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 123141519979 and 123141520006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123141520091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61570760015 + 61570760016.

It is an arithmetic number, because the mean of its divisors is an integer number (61570760016).

Almost surely, 2^123141520031 is an apocalyptic number.

123141520031 is a deficient number, since it is larger than the sum of its proper divisors (1).

123141520031 is an equidigital number, since it uses as much as digits as its factorization.

123141520031 is an evil number, because the sum of its binary digits is even.

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

Adding to 123141520031 its reverse (130025141321), we get a palindrome (253166661352).

The spelling of 123141520031 in words is "one hundred twenty-three billion, one hundred forty-one million, five hundred twenty thousand, thirty-one".