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12303231121 = 29469190439
BaseRepresentation
bin10110111010101010…
…00110100010010001
31011202102200220020201
423131111012202101
5200144111343441
65352500535201
7613612511326
oct133525064221
934672626221
1012303231121
115243942705
1224743b1501
131210c2421c
14849dd2b4d
154c01bbc31
hex2dd546891

12303231121 has 8 divisors (see below), whose sum is σ = 12730334400. Its totient is φ = 11876318160.

The previous prime is 12303231097. The next prime is 12303231131. The reversal of 12303231121 is 12113230321.

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

It is a cyclic number.

It is not a de Polignac number, because 12303231121 - 25 = 12303231089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12303231131) 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, 90820 + ... + 181258.

It is an arithmetic number, because the mean of its divisors is an integer number (1591291800).

Almost surely, 212303231121 is an apocalyptic number.

It is an amenable number.

12303231121 is a deficient number, since it is larger than the sum of its proper divisors (427103279).

12303231121 is an equidigital number, since it uses as much as digits as its factorization.

12303231121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95159.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12303231121 its reverse (12113230321), we get a palindrome (24416461442).

The spelling of 12303231121 in words is "twelve billion, three hundred three million, two hundred thirty-one thousand, one hundred twenty-one".

Divisors: 1 29 4691 90439 136039 2622731 424249349 12303231121