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12405230200031 = 12797678977953
BaseRepresentation
bin1011010010000101000101…
…0101101110010011011111
31121220221001211012011102112
42310201101111232103133
53111221402412400111
642214514543344235
72420151111616064
oct264412125562337
947827054164375
1012405230200031
113a53035053969
1214842725b207b
136bca67788b36
1430c5b8646c6b
15167a4da92e8b
hexb485156e4df

12405230200031 has 4 divisors (see below), whose sum is σ = 12502909178112. Its totient is φ = 12307551221952.

The previous prime is 12405230200007. The next prime is 12405230200039. The reversal of 12405230200031 is 13000203250421.

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 12405230200031 - 222 = 12405226005727 is a prime.

It is a super-2 number, since 2×124052302000312 (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12405230200039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48839488850 + ... + 48839489103.

It is an arithmetic number, because the mean of its divisors is an integer number (3125727294528).

Almost surely, 212405230200031 is an apocalyptic number.

12405230200031 is a deficient number, since it is larger than the sum of its proper divisors (97678978081).

12405230200031 is an equidigital number, since it uses as much as digits as its factorization.

12405230200031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97678978080.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 12405230200031 its reverse (13000203250421), we get a palindrome (25405433450452).

The spelling of 12405230200031 in words is "twelve trillion, four hundred five billion, two hundred thirty million, two hundred thousand, thirty-one".

Divisors: 1 127 97678977953 12405230200031