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231030012023 = 19313715767523
BaseRepresentation
bin1101011100101001110…
…1100011100001110111
3211002022212201121201222
43113022131203201313
512241122140341043
6254044514540555
722456065462236
oct3271235434167
9732285647658
10231030012023
1189a85467538
123893759775b
1318a2abcba35
14b27924ab1d
15602270bd68
hex35ca763877

231030012023 has 32 divisors (see below), whose sum is σ = 259465021440. Its totient is φ = 204769918080.

The previous prime is 231030012007. The next prime is 231030012049. The reversal of 231030012023 is 320210030132.

It is a cyclic number.

It is not a de Polignac number, because 231030012023 - 24 = 231030012007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231030011992 and 231030012010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231030012523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3387740 + ... + 3455262.

It is an arithmetic number, because the mean of its divisors is an integer number (8108281920).

Almost surely, 2231030012023 is an apocalyptic number.

231030012023 is a deficient number, since it is larger than the sum of its proper divisors (28435009417).

231030012023 is a wasteful number, since it uses less digits than its factorization.

231030012023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67767.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 231030012023 its reverse (320210030132), we get a palindrome (551240042155).

The spelling of 231030012023 in words is "two hundred thirty-one billion, thirty million, twelve thousand, twenty-three".

Divisors: 1 19 31 37 157 589 703 1147 2983 4867 5809 21793 67523 92473 110371 180079 1282937 2093213 2498351 3421501 10601111 39771047 47468669 77448881 201421109 328634441 392241107 1471528739 6244054379 7452581033 12159474317 231030012023