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31074485 = 513478069
BaseRepresentation
bin111011010001…
…0100010110101
32011110202011212
41312202202311
530423340420
63030011205
7525062111
oct166424265
964422155
1031074485
11165a47a2
12a4a6b05
136590090
1441ac741
152adc3c5
hex1da28b5

31074485 has 8 divisors (see below), whose sum is σ = 40157880. Its totient is φ = 22947264.

The previous prime is 31074479. The next prime is 31074497. The reversal of 31074485 is 58447013.

It can be written as a sum of positive squares in 4 ways, for example, as 857476 + 30217009 = 926^2 + 5497^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 31074485 - 24 = 31074469 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238970 + ... + 239099.

It is an arithmetic number, because the mean of its divisors is an integer number (5019735).

Almost surely, 231074485 is an apocalyptic number.

It is an amenable number.

31074485 is a deficient number, since it is larger than the sum of its proper divisors (9083395).

31074485 is a wasteful number, since it uses less digits than its factorization.

31074485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478087.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 31074485 is about 5574.4493001551. The cubic root of 31074485 is about 314.3894615673.

The spelling of 31074485 in words is "thirty-one million, seventy-four thousand, four hundred eighty-five".

Divisors: 1 5 13 65 478069 2390345 6214897 31074485