505400231031243 has 16 divisors (see below), whose sum is σ = 713674369604736. Its totient is φ = 317039132188800.

The previous prime is 505400231031217. The next prime is 505400231031251. The reversal of 505400231031243 is 342130132004505.

It is not a de Polignac number, because 505400231031243 - 2⁵ = 505400231031211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (505400231031043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1167566833 + ... + 1167999618.

It is an arithmetic number, because the mean of its divisors is an integer number (44604648100296).

Almost surely, 2^{505400231031243} is an apocalyptic number.

505400231031243 is a deficient number, since it is larger than the sum of its proper divisors (208274138573493).

505400231031243 is a wasteful number, since it uses less digits than its factorization.

505400231031243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2335570714.

The product of its (nonzero) digits is 43200, while the sum is 33.

Adding to 505400231031243 its reverse (342130132004505), we get a palindrome (847530363035748).

The spelling of 505400231031243 in words is "five hundred five trillion, four hundred billion, two hundred thirty-one million, thirty-one thousand, two hundred forty-three".