1065540531 has 16 divisors (see below), whose sum is σ = 1576149120. Its totient is φ = 634835520.

The previous prime is 1065540529. The next prime is 1065540551. The reversal of 1065540531 is 1350455601.

It is not a de Polignac number, because 1065540531 - 2¹ = 1065540529 is a prime.

It is a super-2 number, since 2×1065540531² = 2270753246407523922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1065540551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 271690 + ... + 275583.

It is an arithmetic number, because the mean of its divisors is an integer number (98509320).

Almost surely, 2^1065540531 is an apocalyptic number.

1065540531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1065540531 is a deficient number, since it is larger than the sum of its proper divisors (510608589).

1065540531 is a wasteful number, since it uses less digits than its factorization.

1065540531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547346.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 1065540531 is about 32642.6183232902. The cubic root of 1065540531 is about 1021.3862130850.

The spelling of 1065540531 in words is "one billion, sixty-five million, five hundred forty thousand, five hundred thirty-one".