260435531 has 2 divisors, whose sum is σ = 260435532. Its totient is φ = 260435530.

The previous prime is 260435503. The next prime is 260435533. The reversal of 260435531 is 135534062.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-260435531 is a prime.

It is a super-2 number, since 2×260435531² = 135653331614503922, which contains 22 as substring.

Together with 260435533, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 260435494 and 260435503.

It is not a weakly prime, because it can be changed into another prime (260435533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130217765 + 130217766.

It is an arithmetic number, because the mean of its divisors is an integer number (130217766).

Almost surely, 2^260435531 is an apocalyptic number.

260435531 is a deficient number, since it is larger than the sum of its proper divisors (1).

260435531 is an equidigital number, since it uses as much as digits as its factorization.

260435531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 260435531 is about 16138.0150886037. The cubic root of 260435531 is about 638.6066129333.

Adding to 260435531 its reverse (135534062), we get a palindrome (395969593).

The spelling of 260435531 in words is "two hundred sixty million, four hundred thirty-five thousand, five hundred thirty-one".