259135831 has 2 divisors, whose sum is σ = 259135832. Its totient is φ = 259135830.

The previous prime is 259135829. The next prime is 259135841. The reversal of 259135831 is 138531952.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 259135831 - 2¹ = 259135829 is a prime.

It is a super-2 number, since 2×259135831² = 134302757816121122, which contains 22 as substring.

Together with 259135829, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (259135841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129567915 + 129567916.

It is an arithmetic number, because the mean of its divisors is an integer number (129567916).

Almost surely, 2^259135831 is an apocalyptic number.

259135831 is a deficient number, since it is larger than the sum of its proper divisors (1).

259135831 is an equidigital number, since it uses as much as digits as its factorization.

259135831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 37.

The square root of 259135831 is about 16097.6964501136. The cubic root of 259135831 is about 637.5425216287.

The spelling of 259135831 in words is "two hundred fifty-nine million, one hundred thirty-five thousand, eight hundred thirty-one".