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2122310131 = 12641167891
BaseRepresentation
bin111111001111111…
…1110000111110011
312110220111112011221
41332133332013303
513321302411011
6550332245511
7103410224044
oct17637760763
95426445157
102122310131
11999a97017
124b2910897
1327a8cc916
14161c168cb
15c64c2971
hex7e7fe1f3

2122310131 has 4 divisors (see below), whose sum is σ = 2122490664. Its totient is φ = 2122129600.

The previous prime is 2122310087. The next prime is 2122310147. The reversal of 2122310131 is 1310132212.

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 2122310131 - 215 = 2122277363 is a prime.

It is a super-2 number, since 2×21223101312 = 9008400584290474322, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (2122310831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71305 + ... + 96586.

It is an arithmetic number, because the mean of its divisors is an integer number (530622666).

Almost surely, 22122310131 is an apocalyptic number.

2122310131 is a deficient number, since it is larger than the sum of its proper divisors (180533).

2122310131 is a wasteful number, since it uses less digits than its factorization.

2122310131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180532.

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

The square root of 2122310131 is about 46068.5373221247. The cubic root of 2122310131 is about 1285.0981027011.

Adding to 2122310131 its reverse (1310132212), we get a palindrome (3432442343).

The spelling of 2122310131 in words is "two billion, one hundred twenty-two million, three hundred ten thousand, one hundred thirty-one".

Divisors: 1 12641 167891 2122310131