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130121210323 = 13291069322871
BaseRepresentation
bin111100100101111010…
…1000001100111010011
3110102212101000100221001
41321023311001213103
54112442012212243
6135435445042431
712254345016136
oct1711365014723
9412771010831
10130121210323
1150203038255
12212753b6417
13c369033610
14642561c21d
1535b8807a4d
hex1e4bd419d3

130121210323 has 16 divisors (see below), whose sum is σ = 145098676800. Its totient is φ = 115861253760.

The previous prime is 130121210299. The next prime is 130121210333. The reversal of 130121210323 is 323012121031.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-130121210323 is a prime.

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 130121210323.

It is not an unprimeable number, because it can be changed into a prime (130121210333) 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, 241578 + ... + 564448.

It is an arithmetic number, because the mean of its divisors is an integer number (9068667300).

Almost surely, 2130121210323 is an apocalyptic number.

130121210323 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

130121210323 is a deficient number, since it is larger than the sum of its proper divisors (14977466477).

130121210323 is a wasteful number, since it uses less digits than its factorization.

130121210323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323982.

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

Adding to 130121210323 its reverse (323012121031), we get a palindrome (453133331354).

The spelling of 130121210323 in words is "one hundred thirty billion, one hundred twenty-one million, two hundred ten thousand, three hundred twenty-three".

Divisors: 1 13 29 377 1069 13897 31001 322871 403013 4197323 9363259 121722367 345149099 4486938287 10009323871 130121210323