13531086031 has 2 divisors, whose sum is σ = 13531086032. Its totient is φ = 13531086030.

The previous prime is 13531086007. The next prime is 13531086053. The reversal of 13531086031 is 13068013531.

It is a strong prime.

It is an emirp because it is prime and its reverse (13068013531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13531086031 - 2⁷ = 13531085903 is a prime.

It is a super-2 number, since 2×13531086031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13531085984 and 13531086002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13531086071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6765543015 + 6765543016.

It is an arithmetic number, because the mean of its divisors is an integer number (6765543016).

Almost surely, 2^13531086031 is an apocalyptic number.

13531086031 is a deficient number, since it is larger than the sum of its proper divisors (1).

13531086031 is an equidigital number, since it uses as much as digits as its factorization.

13531086031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 31.

Adding to 13531086031 its reverse (13068013531), we get a palindrome (26599099562).

The spelling of 13531086031 in words is "thirteen billion, five hundred thirty-one million, eighty-six thousand, thirty-one".