260346631 has 2 divisors, whose sum is σ = 260346632. Its totient is φ = 260346630.

The previous prime is 260346629. The next prime is 260346661. The reversal of 260346631 is 136643062.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 260346631 - 2¹ = 260346629 is a prime.

It is a super-2 number, since 2×260346631² = 135560736546100322, which contains 22 as substring.

Together with 260346629, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 260346593 and 260346602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260346661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130173315 + 130173316.

It is an arithmetic number, because the mean of its divisors is an integer number (130173316).

Almost surely, 2^260346631 is an apocalyptic number.

260346631 is a deficient number, since it is larger than the sum of its proper divisors (1).

260346631 is an equidigital number, since it uses as much as digits as its factorization.

260346631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 260346631 is about 16135.2604875162. The cubic root of 260346631 is about 638.5339416038.

Adding to 260346631 its reverse (136643062), we get a palindrome (396989693).

The spelling of 260346631 in words is "two hundred sixty million, three hundred forty-six thousand, six hundred thirty-one".