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18050131 = 1116310067
BaseRepresentation
bin100010011011…
…0110001010011
31020222001010101
41010312301103
514110101011
61442513231
7306265201
oct104666123
936861111
1018050131
11a209370
126065817
13397ca68
14257c071
1518b82c1
hex1136c53

18050131 has 8 divisors (see below), whose sum is σ = 19813824. Its totient is φ = 16306920.

The previous prime is 18050119. The next prime is 18050173. The reversal of 18050131 is 13105081.

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 18050131 - 25 = 18050099 is a prime.

It is a super-2 number, since 2×180501312 = 651614458234322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18050099 and 18050108.

It is not an unprimeable number, because it can be changed into a prime (18050111) 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, 3241 + ... + 6826.

It is an arithmetic number, because the mean of its divisors is an integer number (2476728).

Almost surely, 218050131 is an apocalyptic number.

18050131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

18050131 is a deficient number, since it is larger than the sum of its proper divisors (1763693).

18050131 is a wasteful number, since it uses less digits than its factorization.

18050131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10241.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 18050131 is about 4248.5445743219. The cubic root of 18050131 is about 262.3172109171.

It can be divided in two parts, 18050 and 131, that added together give a palindrome (18181).

The spelling of 18050131 in words is "eighteen million, fifty thousand, one hundred thirty-one".

Divisors: 1 11 163 1793 10067 110737 1640921 18050131