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31474079 = 713345869
BaseRepresentation
bin111100000010…
…0000110011111
32012020001022122
41320010012133
531024132304
63042333155
7531345110
oct170040637
965201278
1031474079
1116847a3a
12a65a1bb
13669cc20
144274207
152b6a9be
hex1e0419f

31474079 has 8 divisors (see below), whose sum is σ = 38737440. Its totient is φ = 24902496.

The previous prime is 31474073. The next prime is 31474111. The reversal of 31474079 is 97047413.

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 31474079 - 216 = 31408543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31474073) 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, 172844 + ... + 173025.

It is an arithmetic number, because the mean of its divisors is an integer number (4842180).

Almost surely, 231474079 is an apocalyptic number.

31474079 is a deficient number, since it is larger than the sum of its proper divisors (7263361).

31474079 is a wasteful number, since it uses less digits than its factorization.

31474079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345889.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 31474079 is about 5610.1763786890. The cubic root of 31474079 is about 315.7313284081.

The spelling of 31474079 in words is "thirty-one million, four hundred seventy-four thousand, seventy-nine".

Divisors: 1 7 13 91 345869 2421083 4496297 31474079