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12312102200131 = 31397164587101
BaseRepresentation
bin1011001100101010001001…
…1110100110001101000011
31121121000200120102121010001
42303022202132212031003
53103210141130401011
642104033543220431
72410343240646226
oct263124236461503
947530616377101
1012312102200131
113a17595797198
12146a202147717
136b40458b7056
14307ca21435bd
151653eccdb7c1
hexb32a27a6343

12312102200131 has 4 divisors (see below), whose sum is σ = 12709266787264. Its totient is φ = 11914937613000.

The previous prime is 12312102200093. The next prime is 12312102200137. The reversal of 12312102200131 is 13100220121321.

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 12312102200131 - 29 = 12312102199619 is a prime.

It is a super-2 number, since 2×123121022001312 (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12312102200099 and 12312102200108.

It is not an unprimeable number, because it can be changed into a prime (12312102200137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198582293520 + ... + 198582293581.

It is an arithmetic number, because the mean of its divisors is an integer number (3177316696816).

Almost surely, 212312102200131 is an apocalyptic number.

12312102200131 is a deficient number, since it is larger than the sum of its proper divisors (397164587133).

12312102200131 is an equidigital number, since it uses as much as digits as its factorization.

12312102200131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397164587132.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 12312102200131 its reverse (13100220121321), we get a palindrome (25412322321452).

The spelling of 12312102200131 in words is "twelve trillion, three hundred twelve billion, one hundred two million, two hundred thousand, one hundred thirty-one".

Divisors: 1 31 397164587101 12312102200131