13530123031 has 2 divisors, whose sum is σ = 13530123032. Its totient is φ = 13530123030.

The previous prime is 13530123029. The next prime is 13530123053. The reversal of 13530123031 is 13032103531.

It is a happy number.

It is an a-pointer prime, because the next prime (13530123053) can be obtained adding 13530123031 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13530123031 - 2¹ = 13530123029 is a prime.

It is a super-3 number, since 3×13530123031³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 13530123029, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 13530122993 and 13530123011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13530123091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6765061515 + 6765061516.

It is an arithmetic number, because the mean of its divisors is an integer number (6765061516).

Almost surely, 2^13530123031 is an apocalyptic number.

13530123031 is a deficient number, since it is larger than the sum of its proper divisors (1).

13530123031 is an equidigital number, since it uses as much as digits as its factorization.

13530123031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 810, while the sum is 22.

Adding to 13530123031 its reverse (13032103531), we get a palindrome (26562226562).

The spelling of 13530123031 in words is "thirteen billion, five hundred thirty million, one hundred twenty-three thousand, thirty-one".