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2131032211 = 71130790149
BaseRepresentation
bin111111100000100…
…1111100010010011
312111111220122121221
41333001033202103
513331021012321
6551243225511
7103544321620
oct17701174223
95444818557
102131032211
119a3a04050
124b5818297
1327c664909
14163047347
15c7146e41
hex7f04f893

2131032211 has 16 divisors (see below), whose sum is σ = 2665555200. Its totient is φ = 1655117280.

The previous prime is 2131032209. The next prime is 2131032247. The reversal of 2131032211 is 1122301312.

It is a cyclic number.

It is not a de Polignac number, because 2131032211 - 21 = 2131032209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2131032251) 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 15 ways as a sum of consecutive naturals, for example, 21436 + ... + 68713.

It is an arithmetic number, because the mean of its divisors is an integer number (166597200).

Almost surely, 22131032211 is an apocalyptic number.

2131032211 is a deficient number, since it is larger than the sum of its proper divisors (534522989).

2131032211 is a wasteful number, since it uses less digits than its factorization.

2131032211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90474.

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

The square root of 2131032211 is about 46163.1044341691. The cubic root of 2131032211 is about 1286.8561568740.

Adding to 2131032211 its reverse (1122301312), we get a palindrome (3253333523).

The spelling of 2131032211 in words is "two billion, one hundred thirty-one million, thirty-two thousand, two hundred eleven".

Divisors: 1 7 11 77 307 2149 3377 23639 90149 631043 991639 6941473 27675743 193730201 304433173 2131032211