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20101131120023 = 26783750518281
BaseRepresentation
bin1001001001000001010001…
…10001111010110110010111
32122011122112101111200212122
410210200220301322312113
510113314104031320043
6110430155425010155
74143154524245252
oct444405061726627
978148471450778
1020101131120023
11644a929533378
12230789818395b
13b2a6b424bb65
144d6c855dc099
1524cd23552368
hex124828c7ad97

20101131120023 has 4 divisors (see below), whose sum is σ = 20101881665088. Its totient is φ = 20100380574960.

The previous prime is 20101131119963. The next prime is 20101131120043. The reversal of 20101131120023 is 32002113110102.

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 20101131120023 - 28 = 20101131119767 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20101131119983 and 20101131120010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101131120043) 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, 375232358 + ... + 375285923.

It is an arithmetic number, because the mean of its divisors is an integer number (5025470416272).

Almost surely, 220101131120023 is an apocalyptic number.

20101131120023 is a deficient number, since it is larger than the sum of its proper divisors (750545065).

20101131120023 is an equidigital number, since it uses as much as digits as its factorization.

20101131120023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750545064.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 20101131120023 its reverse (32002113110102), we get a palindrome (52103244230125).

The spelling of 20101131120023 in words is "twenty trillion, one hundred one billion, one hundred thirty-one million, one hundred twenty thousand, twenty-three".

Divisors: 1 26783 750518281 20101131120023