260135531 has 2 divisors, whose sum is σ = 260135532. Its totient is φ = 260135530.

The previous prime is 260135503. The next prime is 260135569. The reversal of 260135531 is 135531062.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 260135531 - 2¹⁴ = 260119147 is a prime.

It is a super-2 number, since 2×260135531² = 135340988977303922, 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 260135531.

It is not a weakly prime, because it can be changed into another prime (260135591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130067765 + 130067766.

It is an arithmetic number, because the mean of its divisors is an integer number (130067766).

Almost surely, 2^260135531 is an apocalyptic number.

260135531 is a deficient number, since it is larger than the sum of its proper divisors (1).

260135531 is an equidigital number, since it uses as much as digits as its factorization.

260135531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 260135531 is about 16128.7175869627. The cubic root of 260135531 is about 638.3613115435.

Adding to 260135531 its reverse (135531062), we get a palindrome (395666593).

The spelling of 260135531 in words is "two hundred sixty million, one hundred thirty-five thousand, five hundred thirty-one".