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31010423223 = 3133125649647
BaseRepresentation
bin11100111000010111…
…011000000110110111
32222001011120201110110
4130320113120012313
51002002132020343
622125044554103
72145316151103
oct347027300667
988034521413
1031010423223
1112173636a4a
1260153b2933
132c02811670
14170270a903
15c176b8833
hex7385d81b7

31010423223 has 16 divisors (see below), whose sum is σ = 45964169216. Its totient is φ = 18467745120.

The previous prime is 31010423207. The next prime is 31010423251. The reversal of 31010423223 is 32232401013.

It is not a de Polignac number, because 31010423223 - 24 = 31010423207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31010423223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31010423263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12823615 + ... + 12826032.

It is an arithmetic number, because the mean of its divisors is an integer number (2872760576).

Almost surely, 231010423223 is an apocalyptic number.

31010423223 is a deficient number, since it is larger than the sum of its proper divisors (14953745993).

31010423223 is a wasteful number, since it uses less digits than its factorization.

31010423223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25649694.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31010423223 its reverse (32232401013), we get a palindrome (63242824236).

The spelling of 31010423223 in words is "thirty-one billion, ten million, four hundred twenty-three thousand, two hundred twenty-three".

Divisors: 1 3 13 31 39 93 403 1209 25649647 76948941 333445411 795139057 1000336233 2385417171 10336807741 31010423223