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2131110323 = 8632469421
BaseRepresentation
bin111111100000110…
…0010100110110011
312111112001121202222
41333001202212303
513331031012243
6551245031255
7103545065426
oct17701424663
95445047688
102131110323
119a3a57801
124b585552b
1327c691334
141630679bd
15c7160168
hex7f0629b3

2131110323 has 4 divisors (see below), whose sum is σ = 2133580608. Its totient is φ = 2128640040.

The previous prime is 2131110313. The next prime is 2131110353. The reversal of 2131110323 is 3230111312.

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 2131110323 - 212 = 2131106227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131110313) 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 3 ways as a sum of consecutive naturals, for example, 1233848 + ... + 1235573.

It is an arithmetic number, because the mean of its divisors is an integer number (533395152).

Almost surely, 22131110323 is an apocalyptic number.

2131110323 is a deficient number, since it is larger than the sum of its proper divisors (2470285).

2131110323 is an equidigital number, since it uses as much as digits as its factorization.

2131110323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2470284.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 2131110323 is about 46163.9504700367. The cubic root of 2131110323 is about 1286.8718797210.

Adding to 2131110323 its reverse (3230111312), we get a palindrome (5361221635).

The spelling of 2131110323 in words is "two billion, one hundred thirty-one million, one hundred ten thousand, three hundred twenty-three".

Divisors: 1 863 2469421 2131110323