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2012193381 = 31160975557
BaseRepresentation
bin111011111101111…
…1010001001100101
312012020022000101210
41313323322021211
513110110142011
6531400142033
7100602235002
oct16773721145
95166260353
102012193381
11942915740
12481a67919
13260b56393
141513508a9
15bb9c06a6
hex77efa265

2012193381 has 8 divisors (see below), whose sum is σ = 2926826784. Its totient is φ = 1219511120.

The previous prime is 2012193377. The next prime is 2012193383. The reversal of 2012193381 is 1833912102.

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 2012193381 - 22 = 2012193377 is a prime.

It is a super-2 number, since 2×20121933812 = 8097844405080422322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012193383) 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, 30487746 + ... + 30487811.

It is an arithmetic number, because the mean of its divisors is an integer number (365853348).

Almost surely, 22012193381 is an apocalyptic number.

It is an amenable number.

2012193381 is a deficient number, since it is larger than the sum of its proper divisors (914633403).

2012193381 is a wasteful number, since it uses less digits than its factorization.

2012193381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60975571.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 2012193381 is about 44857.4785403727. The cubic root of 2012193381 is about 1262.4763135902.

The spelling of 2012193381 in words is "two billion, twelve million, one hundred ninety-three thousand, three hundred eighty-one".

Divisors: 1 3 11 33 60975557 182926671 670731127 2012193381