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12023023031 = 86231394297
BaseRepresentation
bin10110011001010000…
…01100010110110111
31011000220102212000022
423030220030112313
5144110343214111
65305011035355
7603641003165
oct131450142667
934026385008
1012023023031
11510a757178
1223b659bb5b
131197b65c16
14820ad2235
154a57bc2db
hex2cca0c5b7

12023023031 has 4 divisors (see below), whose sum is σ = 12024425952. Its totient is φ = 12021620112.

The previous prime is 12023023003. The next prime is 12023023069. The reversal of 12023023031 is 13032032021.

12023023031 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 a cyclic number.

It is not a de Polignac number, because 12023023031 - 218 = 12022760887 is a prime.

It is a super-2 number, since 2×120230230312 (a number of 21 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 (12023023531) 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, 688526 + ... + 705771.

It is an arithmetic number, because the mean of its divisors is an integer number (3006106488).

Almost surely, 212023023031 is an apocalyptic number.

12023023031 is a deficient number, since it is larger than the sum of its proper divisors (1402921).

12023023031 is an equidigital number, since it uses as much as digits as its factorization.

12023023031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402920.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 12023023031 its reverse (13032032021), we get a palindrome (25055055052).

The spelling of 12023023031 in words is "twelve billion, twenty-three million, twenty-three thousand, thirty-one".

Divisors: 1 8623 1394297 12023023031