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312020012023 = 809385686047
BaseRepresentation
bin1001000101001011101…
…01111000101111110111
31002211101012200220102121
410202211311320233313
520103004110341043
6355201235420411
731354101225226
oct4424565705767
91084335626377
10312020012023
11110366187235
125057aa54707
132356717c165
141115d68ccbd
1581b2a83ded
hex48a5d78bf7

312020012023 has 4 divisors (see below), whose sum is σ = 312405698880. Its totient is φ = 311634325168.

The previous prime is 312020011993. The next prime is 312020012039. The reversal of 312020012023 is 320210020213.

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 312020012023 - 225 = 311986457591 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312020011988 and 312020012006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312020012923) 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, 192842215 + ... + 192843832.

It is an arithmetic number, because the mean of its divisors is an integer number (78101424720).

Almost surely, 2312020012023 is an apocalyptic number.

312020012023 is a deficient number, since it is larger than the sum of its proper divisors (385686857).

312020012023 is an equidigital number, since it uses as much as digits as its factorization.

312020012023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385686856.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 312020012023 its reverse (320210020213), we get a palindrome (632230032236).

The spelling of 312020012023 in words is "three hundred twelve billion, twenty million, twelve thousand, twenty-three".

Divisors: 1 809 385686047 312020012023