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2112132031 = 2972832139
BaseRepresentation
bin111110111100100…
…1001001110111111
312110012100102110021
41331321021032333
513311201211111
6545330153011
7103224553222
oct17571111677
95405312407
102112132031
11994275069
124ab422767
13278777c89
141607275b9
15c5661d71
hex7de493bf

2112132031 has 4 divisors (see below), whose sum is σ = 2184964200. Its totient is φ = 2039299864.

The previous prime is 2112132023. The next prime is 2112132073. The reversal of 2112132031 is 1302312112.

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 2112132031 - 23 = 2112132023 is a prime.

It is a super-2 number, since 2×21121320312 = 8922203432752369922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2112131996 and 2112132014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112132431) 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, 36416041 + ... + 36416098.

It is an arithmetic number, because the mean of its divisors is an integer number (546241050).

Almost surely, 22112132031 is an apocalyptic number.

2112132031 is a deficient number, since it is larger than the sum of its proper divisors (72832169).

2112132031 is an equidigital number, since it uses as much as digits as its factorization.

2112132031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72832168.

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

The square root of 2112132031 is about 45957.9376277918. The cubic root of 2112132031 is about 1283.0404671713.

Adding to 2112132031 its reverse (1302312112), we get a palindrome (3414444143).

The spelling of 2112132031 in words is "two billion, one hundred twelve million, one hundred thirty-two thousand, thirty-one".

Divisors: 1 29 72832139 2112132031