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992131 = 7271523
BaseRepresentation
bin11110010001110000011
31212101221121
43302032003
5223222011
633133111
711301340
oct3621603
91771847
10992131
11618448
123ba197
1328977a
141bb7c7
15148e71
hexf2383

992131 has 8 divisors (see below), whose sum is σ = 1140224. Its totient is φ = 845640.

The previous prime is 992129. The next prime is 992141. The reversal of 992131 is 131299.

992131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 992131 - 21 = 992129 is a prime.

It is a super-2 number, since 2×9921312 = 1968647842322, which contains 22 as substring.

It is a Duffinian number.

992131 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 992096 and 992105.

It is not an unprimeable number, because it can be changed into a prime (992111) 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, 1636 + ... + 2158.

It is an arithmetic number, because the mean of its divisors is an integer number (142528).

2992131 is an apocalyptic number.

992131 is a deficient number, since it is larger than the sum of its proper divisors (148093).

992131 is a wasteful number, since it uses less digits than its factorization.

992131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801.

The product of its digits is 486, while the sum is 25.

The square root of 992131 is about 996.0577292507. The cubic root of 992131 is about 99.7370089635.

The spelling of 992131 in words is "nine hundred ninety-two thousand, one hundred thirty-one".

Divisors: 1 7 271 523 1897 3661 141733 992131