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2031130271 = 61912232683
BaseRepresentation
bin111100100010000…
…1001011010011111
312020112221002221002
41321010021122133
513124432132041
6533314100515
7101222215412
oct17104113237
95215832832
102031130271
1195257a265
1248827a73b
13264a56941
14153a7db79
15bd4b159b
hex7910969f

2031130271 has 8 divisors (see below), whose sum is σ = 2036833920. Its totient is φ = 2025435672.

The previous prime is 2031130247. The next prime is 2031130273. The reversal of 2031130271 is 1720311302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2031130271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031130273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 755696 + ... + 758378.

It is an arithmetic number, because the mean of its divisors is an integer number (254604240).

Almost surely, 22031130271 is an apocalyptic number.

2031130271 is a deficient number, since it is larger than the sum of its proper divisors (5703649).

2031130271 is a wasteful number, since it uses less digits than its factorization.

2031130271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4525.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 2031130271 is about 45068.0626497301. The cubic root of 2031130271 is about 1266.4243712992.

Adding to 2031130271 its reverse (1720311302), we get a palindrome (3751441573).

The spelling of 2031130271 in words is "two billion, thirty-one million, one hundred thirty thousand, two hundred seventy-one".

Divisors: 1 619 1223 2683 757037 1660777 3281309 2031130271