259263431 has 4 divisors (see below), whose sum is σ = 296301072. Its totient is φ = 222225792.

The previous prime is 259263419. The next prime is 259263437. The reversal of 259263431 is 134362952.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 259263431 - 2¹⁸ = 259001287 is a prime.

It is a super-2 number, since 2×259263431² = 134435053307783522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 259263391 and 259263400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259263437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18518810 + ... + 18518823.

It is an arithmetic number, because the mean of its divisors is an integer number (74075268).

Almost surely, 2^259263431 is an apocalyptic number.

259263431 is a deficient number, since it is larger than the sum of its proper divisors (37037641).

259263431 is an equidigital number, since it uses as much as digits as its factorization.

259263431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37037640.

The product of its digits is 38880, while the sum is 35.

The square root of 259263431 is about 16101.6592623245. The cubic root of 259263431 is about 637.6471476809.

The spelling of 259263431 in words is "two hundred fifty-nine million, two hundred sixty-three thousand, four hundred thirty-one".