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31070 = 2513239
BaseRepresentation
bin111100101011110
31120121202
413211132
51443240
6355502
7156404
oct74536
946552
1031070
1121386
1215b92
13111b0
14b474
159315
hex795e

31070 has 16 divisors (see below), whose sum is σ = 60480. Its totient is φ = 11424.

The previous prime is 31069. The next prime is 31079. The reversal of 31070 is 7013.

Adding to 31070 its reverse (7013), we get a palindrome (38083).

It is a Curzon number.

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 31070.

It is not an unprimeable number, because it can be changed into a prime (31079) 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, 11 + ... + 249.

It is an arithmetic number, because the mean of its divisors is an integer number (3780).

231070 is an apocalyptic number.

31070 is a deficient number, since it is larger than the sum of its proper divisors (29410).

31070 is a wasteful number, since it uses less digits than its factorization.

31070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259.

The product of its (nonzero) digits is 21, while the sum is 11.

The square root of 31070 is about 176.2668431668. The cubic root of 31070 is about 31.4374335497.

The spelling of 31070 in words is "thirty-one thousand, seventy".

Divisors: 1 2 5 10 13 26 65 130 239 478 1195 2390 3107 6214 15535 31070