1080206531 has 2 divisors, whose sum is σ = 1080206532. Its totient is φ = 1080206530.

The previous prime is 1080206521. The next prime is 1080206549. The reversal of 1080206531 is 1356020801.

It is a weak prime.

It is an emirp because it is prime and its reverse (1356020801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1080206531 - 2²⁶ = 1013097667 is a prime.

It is a super-2 number, since 2×1080206531² = 2333692299230107922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1080206531.

It is not a weakly prime, because it can be changed into another prime (1080206521) 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, 540103265 + 540103266.

It is an arithmetic number, because the mean of its divisors is an integer number (540103266).

Almost surely, 2^1080206531 is an apocalyptic number.

1080206531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1080206531 is an equidigital number, since it uses as much as digits as its factorization.

1080206531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1080206531 is about 32866.4955691963. The cubic root of 1080206531 is about 1026.0509644009.

The spelling of 1080206531 in words is "one billion, eighty million, two hundred six thousand, five hundred thirty-one".