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12103130212031 = 233040331730809
BaseRepresentation
bin1011000000011111101011…
…0001101110011010111111
31120212001021221202200201002
42300013322301232122333
53041244202313241111
641424033512240515
72356264564236425
oct260077261563277
946761257680632
1012103130212031
1139469aa5275a1
1214358019a013b
1369a4218749a1
142dbb1a65d115
1515ec6bd7063b
hexb01fac6e6bf

12103130212031 has 8 divisors (see below), whose sum is σ = 12629402100960. Its totient is φ = 11576862392832.

The previous prime is 12103130212009. The next prime is 12103130212057. The reversal of 12103130212031 is 13021203130121.

It is a happy number.

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 12103130212031 - 26 = 12103130211967 is a prime.

It is a super-2 number, since 2×121031302120312 (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 = 12103130211994 and 12103130212012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12103130212001) 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, 6127355 + ... + 7858163.

It is an arithmetic number, because the mean of its divisors is an integer number (1578675262620).

Almost surely, 212103130212031 is an apocalyptic number.

12103130212031 is a deficient number, since it is larger than the sum of its proper divisors (526271888929).

12103130212031 is a wasteful number, since it uses less digits than its factorization.

12103130212031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2034865.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 12103130212031 its reverse (13021203130121), we get a palindrome (25124333342152).

The spelling of 12103130212031 in words is "twelve trillion, one hundred three billion, one hundred thirty million, two hundred twelve thousand, thirty-one".

Divisors: 1 23 304033 1730809 6992759 39808607 526223052697 12103130212031