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12302001131 = 71757428733
BaseRepresentation
bin10110111010100000…
…11010001111101011
31011202100101102000112
423131100122033223
5200143303014011
65352414324535
7613566166340
oct133520321753
934670342015
1012302001131
115243182592
122473ab974b
1312108b3414
14849b927c7
154c002758b
hex2dd41a3eb

12302001131 has 4 divisors (see below), whose sum is σ = 14059429872. Its totient is φ = 10544572392.

The previous prime is 12302001121. The next prime is 12302001139. The reversal of 12302001131 is 13110020321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13110020321 = 131100076491.

It is a cyclic number.

It is not a de Polignac number, because 12302001131 - 26 = 12302001067 is a prime.

It is a super-2 number, since 2×123020011312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12302001139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 878714360 + ... + 878714373.

It is an arithmetic number, because the mean of its divisors is an integer number (3514857468).

Almost surely, 212302001131 is an apocalyptic number.

12302001131 is a deficient number, since it is larger than the sum of its proper divisors (1757428741).

12302001131 is an equidigital number, since it uses as much as digits as its factorization.

12302001131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1757428740.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 12302001131 its reverse (13110020321), we get a palindrome (25412021452).

The spelling of 12302001131 in words is "twelve billion, three hundred two million, one thousand, one hundred thirty-one".

Divisors: 1 7 1757428733 12302001131