13531003931 has 2 divisors, whose sum is σ = 13531003932. Its totient is φ = 13531003930.

The previous prime is 13531003909. The next prime is 13531004051. The reversal of 13531003931 is 13930013531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13531003931 - 2⁶ = 13531003867 is a prime.

It is a super-2 number, since 2×13531003931² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13531003894 and 13531003903.

It is not a weakly prime, because it can be changed into another prime (13531009931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6765501965 + 6765501966.

It is an arithmetic number, because the mean of its divisors is an integer number (6765501966).

Almost surely, 2^13531003931 is an apocalyptic number.

13531003931 is a deficient number, since it is larger than the sum of its proper divisors (1).

13531003931 is an equidigital number, since it uses as much as digits as its factorization.

13531003931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3645, while the sum is 29.

The spelling of 13531003931 in words is "thirteen billion, five hundred thirty-one million, three thousand, nine hundred thirty-one".