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2031011131 = 17432778401
BaseRepresentation
bin111100100001110…
…1100010100111011
312020112201001111111
41321003230110323
513124414324011
6533311341151
7101221211152
oct17103542473
95215631444
102031011131
119524a87a6
124882217b7
13264a14646
14153a4c599
15bd48b121
hex790ec53b

2031011131 has 8 divisors (see below), whose sum is σ = 2200494384. Its totient is φ = 1867084800.

The previous prime is 2031011093. The next prime is 2031011153. The reversal of 2031011131 is 1311101302.

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 2031011131 - 211 = 2031009083 is a prime.

It is a super-2 number, since 2×20310111312 = 8250012428491798322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2031011231) 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 7 ways as a sum of consecutive naturals, for example, 1388470 + ... + 1389931.

It is an arithmetic number, because the mean of its divisors is an integer number (275061798).

Almost surely, 22031011131 is an apocalyptic number.

2031011131 is a deficient number, since it is larger than the sum of its proper divisors (169483253).

2031011131 is a wasteful number, since it uses less digits than its factorization.

2031011131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2778461.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 2031011131 is about 45066.7408517634. The cubic root of 2031011131 is about 1266.3996092653.

Adding to 2031011131 its reverse (1311101302), we get a palindrome (3342112433).

The spelling of 2031011131 in words is "two billion, thirty-one million, eleven thousand, one hundred thirty-one".

Divisors: 1 17 43 731 2778401 47232817 119471243 2031011131