12671531 has 2 divisors, whose sum is σ = 12671532. Its totient is φ = 12671530.

The previous prime is 12671479. The next prime is 12671543. The reversal of 12671531 is 13517621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12671531 - 2¹⁰ = 12670507 is a prime.

It is a super-2 number, since 2×12671531² = 321135395767922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12671531.

It is not a weakly prime, because it can be changed into another prime (12671431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6335765 + 6335766.

It is an arithmetic number, because the mean of its divisors is an integer number (6335766).

Almost surely, 2^12671531 is an apocalyptic number.

12671531 is a deficient number, since it is larger than the sum of its proper divisors (1).

12671531 is an equidigital number, since it uses as much as digits as its factorization.

12671531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1260, while the sum is 26.

The square root of 12671531 is about 3559.7093982515. The cubic root of 12671531 is about 233.1361910787.

The spelling of 12671531 in words is "twelve million, six hundred seventy-one thousand, five hundred thirty-one".