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31422 = 235237
BaseRepresentation
bin111101010111110
31121002210
413222332
52001142
6401250
7160416
oct75276
947083
1031422
1121676
1216226
13113c1
14b646
15949c
hex7abe

31422 has 8 divisors (see below), whose sum is σ = 62856. Its totient is φ = 10472.

The previous prime is 31397. The next prime is 31469. The reversal of 31422 is 22413.

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

31422 is an admirable number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 31398 and 31407.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 31422.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2613 + ... + 2624.

It is an arithmetic number, because the mean of its divisors is an integer number (7857).

231422 is an apocalyptic number.

31422 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31428).

31422 is a wasteful number, since it uses less digits than its factorization.

31422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5242.

The product of its digits is 48, while the sum is 12.

The square root of 31422 is about 177.2625171885. The cubic root of 31422 is about 31.5557089268. Note that the first 3 decimals are identical.

Adding to 31422 its reverse (22413), we get a palindrome (53835).

Subtracting from 31422 its reverse (22413), we obtain a palindrome (9009).

The spelling of 31422 in words is "thirty-one thousand, four hundred twenty-two".

Divisors: 1 2 3 6 5237 10474 15711 31422