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20113142141 = 24598179399
BaseRepresentation
bin10010101110110101…
…100011000101111101
31220220201102111002102
4102232311203011331
5312142431022031
613123450234445
71311264613241
oct225665430575
956821374072
1020113142141
118591387424
123a93a25a25
131b86c70251
14d8b338421
157cab697cb
hex4aed6317d

20113142141 has 4 divisors (see below), whose sum is σ = 20121324000. Its totient is φ = 20104960284.

The previous prime is 20113142083. The next prime is 20113142191. The reversal of 20113142141 is 14124131102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14124131102 = 27062065551.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-20113142141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20113142191) 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, 4087241 + ... + 4092158.

It is an arithmetic number, because the mean of its divisors is an integer number (5030331000).

Almost surely, 220113142141 is an apocalyptic number.

It is an amenable number.

20113142141 is a deficient number, since it is larger than the sum of its proper divisors (8181859).

20113142141 is an equidigital number, since it uses as much as digits as its factorization.

20113142141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8181858.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 20113142141 its reverse (14124131102), we get a palindrome (34237273243).

The spelling of 20113142141 in words is "twenty billion, one hundred thirteen million, one hundred forty-two thousand, one hundred forty-one".

Divisors: 1 2459 8179399 20113142141