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31014142 = 240138671
BaseRepresentation
bin111011001001…
…1110011111110
32011100200101221
41312103303332
530414423032
63024423554
7524421145
oct166236376
964320357
1031014142
1116563425
12a477bba
13656b783
14419475c
152ac9597
hex1d93cfe

31014142 has 8 divisors (see below), whose sum is σ = 46638432. Its totient is φ = 15468000.

The previous prime is 31014131. The next prime is 31014161. The reversal of 31014142 is 24141013.

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

It is a congruent number.

It is an unprimeable number.

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, 18534 + ... + 20137.

It is an arithmetic number, because the mean of its divisors is an integer number (5829804).

Almost surely, 231014142 is an apocalyptic number.

31014142 is a deficient number, since it is larger than the sum of its proper divisors (15624290).

31014142 is a wasteful number, since it uses less digits than its factorization.

31014142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39074.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 31014142 is about 5569.0342071135. The cubic root of 31014142 is about 314.1858272299.

Adding to 31014142 its reverse (24141013), we get a palindrome (55155155).

The spelling of 31014142 in words is "thirty-one million, fourteen thousand, one hundred forty-two".

Divisors: 1 2 401 802 38671 77342 15507071 31014142