13100531 has 2 divisors, whose sum is σ = 13100532. Its totient is φ = 13100530.

The previous prime is 13100513. The next prime is 13100539. The reversal of 13100531 is 13500131.

Together with previous prime (13100513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (13500131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13100531 - 2¹⁰ = 13099507 is a prime.

It is a super-2 number, since 2×13100531² = 343247824963922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13100539) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6550265 + 6550266.

It is an arithmetic number, because the mean of its divisors is an integer number (6550266).

Almost surely, 2^13100531 is an apocalyptic number.

13100531 is a deficient number, since it is larger than the sum of its proper divisors (1).

13100531 is an equidigital number, since it uses as much as digits as its factorization.

13100531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45, while the sum is 14.

The square root of 13100531 is about 3619.4655682849. The cubic root of 13100531 is about 235.7380208379.

Adding to 13100531 its reverse (13500131), we get a palindrome (26600662).

It can be divided in two parts, 13100 and 531, that added together give a palindrome (13631).

The spelling of 13100531 in words is "thirteen million, one hundred thousand, five hundred thirty-one".