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12120331323 = 38803458947
BaseRepresentation
bin10110100100110110…
…11001010000111011
31011021200112121220010
423102123121100323
5144310301100243
65322404433003
7606232054632
oct132233312073
934250477803
1012120331323
11515a67a351
1224230a8763
1311b20764a9
1482d9c2519
154ae0de433
hex2d26d943b

12120331323 has 8 divisors (see below), whose sum is σ = 16162312768. Its totient is φ = 8079285384.

The previous prime is 12120331273. The next prime is 12120331331. The reversal of 12120331323 is 32313302121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2k-12120331323 is a prime.

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 12120331323.

It is not an unprimeable number, because it can be changed into a prime (12120331823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203065 + ... + 255882.

It is an arithmetic number, because the mean of its divisors is an integer number (2020289096).

Almost surely, 212120331323 is an apocalyptic number.

12120331323 is a deficient number, since it is larger than the sum of its proper divisors (4041981445).

12120331323 is an equidigital number, since it uses as much as digits as its factorization.

12120331323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467753.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 12120331323 its reverse (32313302121), we get a palindrome (44433633444).

The spelling of 12120331323 in words is "twelve billion, one hundred twenty million, three hundred thirty-one thousand, three hundred twenty-three".

Divisors: 1 3 8803 26409 458947 1376841 4040110441 12120331323