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31030126 = 225161813
BaseRepresentation
bin111011001011…
…1101101101110
32011101111022221
41312113231232
530420431001
63025025554
7524515561
oct166275556
964344287
1031030126
1116574436
12a4852ba
136575b2a
14419a4d8
152ace1a1
hex1d97b6e

31030126 has 8 divisors (see below), whose sum is σ = 46731384. Its totient is φ = 15453000.

The previous prime is 31030123. The next prime is 31030127. The reversal of 31030126 is 62103013.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31030123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30405 + ... + 31408.

It is an arithmetic number, because the mean of its divisors is an integer number (5841423).

Almost surely, 231030126 is an apocalyptic number.

31030126 is a deficient number, since it is larger than the sum of its proper divisors (15701258).

31030126 is a wasteful number, since it uses less digits than its factorization.

31030126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62066.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 31030126 is about 5570.4691005336. The cubic root of 31030126 is about 314.2397927593.

Adding to 31030126 its reverse (62103013), we get a palindrome (93133139).

The spelling of 31030126 in words is "thirty-one million, thirty thousand, one hundred twenty-six".

Divisors: 1 2 251 502 61813 123626 15515063 31030126