13131434530531 has 2 divisors, whose sum is σ = 13131434530532. Its totient is φ = 13131434530530.

The previous prime is 13131434530523. The next prime is 13131434530541. The reversal of 13131434530531 is 13503543413131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13131434530531 - 2³ = 13131434530523 is a prime.

It is a super-2 number, since 2×13131434530531² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13131434530541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6565717265265 + 6565717265266.

It is an arithmetic number, because the mean of its divisors is an integer number (6565717265266).

Almost surely, 2^{13131434530531} is an apocalyptic number.

13131434530531 is a deficient number, since it is larger than the sum of its proper divisors (1).

13131434530531 is an equidigital number, since it uses as much as digits as its factorization.

13131434530531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 37.

Adding to 13131434530531 its reverse (13503543413131), we get a palindrome (26634977943662).

The spelling of 13131434530531 in words is "thirteen trillion, one hundred thirty-one billion, four hundred thirty-four million, five hundred thirty thousand, five hundred thirty-one".