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100122431213 = 779558132441
BaseRepresentation
bin101110100111111000…
…0110000111011101101
3100120102201000111022002
41131033300300323231
53120022320244323
6113555015102045
710143061423550
oct1351760607355
9316381014262
10100122431213
1139509558522
12174a2971925
139597ca814c
144bbb410697
15290ed70828
hex174fc30eed

100122431213 has 16 divisors (see below), whose sum is σ = 115898396160. Its totient is φ = 84715113600.

The previous prime is 100122431203. The next prime is 100122431237. The reversal of 100122431213 is 312134221001.

It is a cyclic number.

It is not a de Polignac number, because 100122431213 - 28 = 100122430957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100122431203) 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, 3070073 + ... + 3102513.

It is an arithmetic number, because the mean of its divisors is an integer number (7243649760).

Almost surely, 2100122431213 is an apocalyptic number.

It is an amenable number.

100122431213 is a deficient number, since it is larger than the sum of its proper divisors (15775964947).

100122431213 is an equidigital number, since it uses as much as digits as its factorization.

100122431213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38108.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 100122431213 its reverse (312134221001), we get a palindrome (412256652214).

The spelling of 100122431213 in words is "one hundred billion, one hundred twenty-two million, four hundred thirty-one thousand, two hundred thirteen".

Divisors: 1 7 79 553 5581 32441 39067 227087 440899 2562839 3086293 17939873 181053221 1267372547 14303204459 100122431213