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31126 = 279197
BaseRepresentation
bin111100110010110
31120200211
413212112
51444001
6400034
7156514
oct74626
946624
1031126
1121427
121601a
1311224
14b4b4
159351
hex7996

31126 has 8 divisors (see below), whose sum is σ = 47520. Its totient is φ = 15288.

The previous prime is 31123. The next prime is 31139. The reversal of 31126 is 62113.

Subtracting from 31126 its sum of digits (13), we obtain a palindrome (31113).

Adding to 31126 its reverse (62113), we get a palindrome (93239).

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

It is an Ulam number.

It is a pancake number, because a pancake can be divided into 31126 parts by 249 straight cuts.

31126 is an undulating number in base 14.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60 + ... + 256.

It is an arithmetic number, because the mean of its divisors is an integer number (5940).

231126 is an apocalyptic number.

31126 is a deficient number, since it is larger than the sum of its proper divisors (16394).

31126 is a wasteful number, since it uses less digits than its factorization.

31126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278.

The product of its digits is 36, while the sum is 13.

The square root of 31126 is about 176.4256217220. The cubic root of 31126 is about 31.4563096321.

The spelling of 31126 in words is "thirty-one thousand, one hundred twenty-six".

Divisors: 1 2 79 158 197 394 15563 31126