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31004334 = 2321722463
BaseRepresentation
bin111011001000…
…1011010101110
32011100011221200
41312101122232
530414114314
63024310330
7524350434
oct166213256
964304850
1031004334
1116557019
12a4723a6
13656717a
144190d54
152ac6709
hex1d916ae

31004334 has 12 divisors (see below), whose sum is σ = 67176096. Its totient is φ = 10334772.

The previous prime is 31004321. The next prime is 31004353. The reversal of 31004334 is 43340013.

It is a super-2 number, since 2×310043342 = 1922537453567112, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1722463 = 31004334 / (3 + 1 + 0 + 0 + 4 + 3 + 3 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 861214 + ... + 861249.

It is an arithmetic number, because the mean of its divisors is an integer number (5598008).

Almost surely, 231004334 is an apocalyptic number.

31004334 is an abundant number, since it is smaller than the sum of its proper divisors (36171762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31004334 is a wasteful number, since it uses less digits than its factorization.

31004334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1722471 (or 1722468 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 31004334 is about 5568.1535539171. The cubic root of 31004334 is about 314.1527040664.

Adding to 31004334 its reverse (43340013), we get a palindrome (74344347).

The spelling of 31004334 in words is "thirty-one million, four thousand, three hundred thirty-four".

Divisors: 1 2 3 6 9 18 1722463 3444926 5167389 10334778 15502167 31004334