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31027023 = 3317232939
BaseRepresentation
bin111011001011…
…0111101001111
32011101100002000
41312112331033
530420331043
63025003343
7524503536
oct166267517
964340060
1031027023
1116572075
12a483553
1365745b1
14419931d
152acd2d3
hex1d96f4f

31027023 has 32 divisors (see below), whose sum is σ = 50803200. Its totient is φ = 18615168.

The previous prime is 31026997. The next prime is 31027033. The reversal of 31027023 is 32072013.

It is not a de Polignac number, because 31027023 - 28 = 31026767 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31026987 and 31027005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31027033) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 9088 + ... + 12026.

It is an arithmetic number, because the mean of its divisors is an integer number (1587600).

Almost surely, 231027023 is an apocalyptic number.

31027023 is a deficient number, since it is larger than the sum of its proper divisors (19776177).

31027023 is a wasteful number, since it uses less digits than its factorization.

31027023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2988 (or 2982 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 31027023 is about 5570.1905712462. The cubic root of 31027023 is about 314.2293177929.

Adding to 31027023 its reverse (32072013), we get a palindrome (63099036).

The spelling of 31027023 in words is "thirty-one million, twenty-seven thousand, twenty-three".

Divisors: 1 3 9 17 23 27 51 69 153 207 391 459 621 1173 2939 3519 8817 10557 26451 49963 67597 79353 149889 202791 449667 608373 1149149 1349001 1825119 3447447 10342341 31027023