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2111232130 = 25724308637
BaseRepresentation
bin111110111010110…
…1101100010000010
312110010122201000121
41331311231202002
513310433412010
6545255010454
7103214114500
oct17565554202
95403581017
102111232130
1199380aa47
124ab069a2a
132785214a7
14160571670
15c55353da
hex7dd6d882

2111232130 has 24 divisors (see below), whose sum is σ = 4420662588. Its totient is φ = 723850848.

The previous prime is 2111232121. The next prime is 2111232131. The reversal of 2111232130 is 312321112.

It can be written as a sum of positive squares in 2 ways, for example, as 1971448801 + 139783329 = 44401^2 + 11823^2 .

It is a super-2 number, since 2×21112321302 = 8914602213488673800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2111232131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2153829 + ... + 2154808.

Almost surely, 22111232130 is an apocalyptic number.

2111232130 is an abundant number, since it is smaller than the sum of its proper divisors (2309430458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2111232130 is a wasteful number, since it uses less digits than its factorization.

2111232130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4308658 (or 4308651 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2111232130 is about 45948.1460997068. The cubic root of 2111232130 is about 1282.8582226588.

Adding to 2111232130 its reverse (312321112), we get a palindrome (2423553242).

The spelling of 2111232130 in words is "two billion, one hundred eleven million, two hundred thirty-two thousand, one hundred thirty".

Divisors: 1 2 5 7 10 14 35 49 70 98 245 490 4308637 8617274 21543185 30160459 43086370 60320918 150802295 211123213 301604590 422246426 1055616065 2111232130