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2012313131 = 47180123773
BaseRepresentation
bin111011111110001…
…0111011000101011
312012020112002122222
41313330113120223
513110123010011
6531402504255
7100603244063
oct16774273053
95166462588
102012313131
11942997704
12481b0508b
13260b98a3a
141513823a3
15bb9e5ddb
hex77f1762b

2012313131 has 8 divisors (see below), whose sum is σ = 2056355904. Its totient is φ = 1968321600.

The previous prime is 2012313089. The next prime is 2012313143. The reversal of 2012313131 is 1313132102.

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

It is a cyclic number.

It is not a de Polignac number, because 2012313131 - 26 = 2012313067 is a prime.

It is a super-2 number, since 2×20123131312 = 8098808274390046322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2012312131) 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, 72761 + ... + 96533.

It is an arithmetic number, because the mean of its divisors is an integer number (257044488).

Almost surely, 22012313131 is an apocalyptic number.

2012313131 is a deficient number, since it is larger than the sum of its proper divisors (44042773).

2012313131 is a wasteful number, since it uses less digits than its factorization.

2012313131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25621.

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

The square root of 2012313131 is about 44858.8133035193. The cubic root of 2012313131 is about 1262.5013573295.

Adding to 2012313131 its reverse (1313132102), we get a palindrome (3325445233).

The spelling of 2012313131 in words is "two billion, twelve million, three hundred thirteen thousand, one hundred thirty-one".

Divisors: 1 47 1801 23773 84647 1117331 42815173 2012313131