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2111230153 = 17731701233
BaseRepresentation
bin111110111010110…
…1101000011001001
312110010122121022101
41331311231003021
513310433331103
6545254553401
7103214105644
oct17565550311
95403577271
102111230153
1199380950a
124ab068861
13278520616
14160570a5b
15c5534a1d
hex7dd6d0c9

2111230153 has 8 divisors (see below), whose sum is σ = 2266043688. Its totient is φ = 1959819264.

The previous prime is 2111230141. The next prime is 2111230157. The reversal of 2111230153 is 3510321112.

It can be written as a sum of positive squares in 4 ways, for example, as 263347984 + 1847882169 = 16228^2 + 42987^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2111230153 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 2111230153.

It is not an unprimeable number, because it can be changed into a prime (2111230157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 849376 + ... + 851857.

It is an arithmetic number, because the mean of its divisors is an integer number (283255461).

Almost surely, 22111230153 is an apocalyptic number.

It is an amenable number.

2111230153 is a deficient number, since it is larger than the sum of its proper divisors (154813535).

2111230153 is a wasteful number, since it uses less digits than its factorization.

2111230153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1701323.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 2111230153 is about 45948.1245863202. The cubic root of 2111230153 is about 1282.8578222274.

Adding to 2111230153 its reverse (3510321112), we get a palindrome (5621551265).

The spelling of 2111230153 in words is "two billion, one hundred eleven million, two hundred thirty thousand, one hundred fifty-three".

Divisors: 1 17 73 1241 1701233 28920961 124190009 2111230153