340238863 has 2 divisors, whose sum is σ = 340238864. Its totient is φ = 340238862.

The previous prime is 340238851. The next prime is 340238903. The reversal of 340238863 is 368832043.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 340238863 - 2²⁵ = 306684431 is a prime.

It is equal to p_18306892 and since 340238863 and 18306892 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340238803) 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, 170119431 + 170119432.

It is an arithmetic number, because the mean of its divisors is an integer number (170119432).

Almost surely, 2^340238863 is an apocalyptic number.

340238863 is a deficient number, since it is larger than the sum of its proper divisors (1).

340238863 is an equidigital number, since it uses as much as digits as its factorization.

340238863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 37.

The square root of 340238863 is about 18445.5648598789. The cubic root of 340238863 is about 698.1166127010.

It can be divided in two parts, 34023886 and 3, that added together give a square (34023889 = 5833²).

The spelling of 340238863 in words is "three hundred forty million, two hundred thirty-eight thousand, eight hundred sixty-three".