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2112153141 = 37100578721
BaseRepresentation
bin111110111100100…
…1110011000110101
312110012101111102010
41331321032120311
513311202400031
6545330434433
7103225001610
oct17571163065
95405344363
102112153141
11994289a0a
124ab432a19
13278784777
14160731177
15c5668246
hex7de4e635

2112153141 has 8 divisors (see below), whose sum is σ = 3218519104. Its totient is φ = 1206944640.

The previous prime is 2112153137. The next prime is 2112153149. The reversal of 2112153141 is 1413512112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2112153141 - 22 = 2112153137 is a prime.

It is a super-2 number, since 2×21121531412 = 8922381782072331762, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 100578721 = 2112153141 / (2 + 1 + 1 + 2 + 1 + 5 + 3 + 1 + 4 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112153149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50289340 + ... + 50289381.

It is an arithmetic number, because the mean of its divisors is an integer number (402314888).

Almost surely, 22112153141 is an apocalyptic number.

2112153141 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2112153141 is a deficient number, since it is larger than the sum of its proper divisors (1106365963).

2112153141 is a wasteful number, since it uses less digits than its factorization.

2112153141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100578731.

The product of its digits is 240, while the sum is 21.

The square root of 2112153141 is about 45958.1672937466. The cubic root of 2112153141 is about 1283.0447416664.

Adding to 2112153141 its reverse (1413512112), we get a palindrome (3525665253).

The spelling of 2112153141 in words is "two billion, one hundred twelve million, one hundred fifty-three thousand, one hundred forty-one".

Divisors: 1 3 7 21 100578721 301736163 704051047 2112153141