13520550031 has 2 divisors, whose sum is σ = 13520550032. Its totient is φ = 13520550030.

The previous prime is 13520550013. The next prime is 13520550053. The reversal of 13520550031 is 13005502531.

Together with previous prime (13520550013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13520550031 is a prime.

It is a super-2 number, since 2×13520550031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13520549978 and 13520550005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13520550011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6760275015 + 6760275016.

It is an arithmetic number, because the mean of its divisors is an integer number (6760275016).

Almost surely, 2^13520550031 is an apocalyptic number.

13520550031 is a deficient number, since it is larger than the sum of its proper divisors (1).

13520550031 is an equidigital number, since it uses as much as digits as its factorization.

13520550031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2250, while the sum is 25.

The spelling of 13520550031 in words is "thirteen billion, five hundred twenty million, five hundred fifty thousand, thirty-one".