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12382523031 = 34127507677
BaseRepresentation
bin10111000100000111…
…00100111010010111
31011221221220100022010
423202003210322113
5200324411214111
65404412235303
7615564465144
oct134203447227
934857810263
1012382523031
11528467a90a
122496a6bb33
131224497208
148567533cb
154c7130aa6
hex2e20e4e97

12382523031 has 4 divisors (see below), whose sum is σ = 16510030712. Its totient is φ = 8255015352.

The previous prime is 12382523029. The next prime is 12382523033. The reversal of 12382523031 is 13032528321.

It is a happy number.

12382523031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (12382523029) and next prime (12382523033).

It is not a de Polignac number, because 12382523031 - 21 = 12382523029 is a prime.

It is a super-2 number, since 2×123825230312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12382523031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12382523033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2063753836 + ... + 2063753841.

It is an arithmetic number, because the mean of its divisors is an integer number (4127507678).

Almost surely, 212382523031 is an apocalyptic number.

12382523031 is a deficient number, since it is larger than the sum of its proper divisors (4127507681).

12382523031 is an equidigital number, since it uses as much as digits as its factorization.

12382523031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4127507680.

The product of its (nonzero) digits is 8640, while the sum is 30.

The spelling of 12382523031 in words is "twelve billion, three hundred eighty-two million, five hundred twenty-three thousand, thirty-one".

Divisors: 1 3 4127507677 12382523031