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12302123311331 = 78272831975041
BaseRepresentation
bin1011001100000100111110…
…1100001010000011100011
31121120001221010101112002222
42303001033230022003203
53103024222031430311
642055303433101255
72406541040542040
oct263011754120343
947501833345088
1012302123311331
113a13334991357
12146829825782b
136b31153aba19
143075d6b181c7
15165016bedadb
hexb304fb0a0e3

12302123311331 has 16 divisors (see below), whose sum is σ = 14077254850560. Its totient is φ = 10531414360320.

The previous prime is 12302123311279. The next prime is 12302123311369. The reversal of 12302123311331 is 13311332120321.

It is not a de Polignac number, because 12302123311331 - 214 = 12302123294947 is a prime.

It is a super-2 number, since 2×123021233113312 (a number of 27 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 12302123311331.

It is not an unprimeable number, because it can be changed into a prime (12302123311391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163901171 + ... + 163976211.

It is an arithmetic number, because the mean of its divisors is an integer number (879828428160).

Almost surely, 212302123311331 is an apocalyptic number.

12302123311331 is a deficient number, since it is larger than the sum of its proper divisors (1775131539229).

12302123311331 is an equidigital number, since it uses as much as digits as its factorization.

12302123311331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104194.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 12302123311331 its reverse (13311332120321), we get a palindrome (25613455431652).

The spelling of 12302123311331 in words is "twelve trillion, three hundred two billion, one hundred twenty-three million, three hundred eleven thousand, three hundred thirty-one".

Divisors: 1 7 827 5789 28319 75041 198233 525287 23419813 62058907 163938691 434412349 2125086079 14875602553 1757446187333 12302123311331