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23123021230 = 2515714728039
BaseRepresentation
bin10101100010001111…
…010100110110101110
32012200111001011222201
4111202033110312232
5334323443134410
614342250332114
71446003303031
oct254217246656
965614034881
1023123021230
119896385101
124593a2a03a
1322467032aa
141194d93018
1590501083a
hex5623d4dae

23123021230 has 16 divisors (see below), whose sum is σ = 41886545760. Its totient is φ = 9190295712.

The previous prime is 23123021219. The next prime is 23123021231. The reversal of 23123021230 is 3212032132.

It is a super-2 number, since 2×231230212302 (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23123021198 and 23123021207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23123021231) 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 7 ways as a sum of consecutive naturals, for example, 7362450 + ... + 7365589.

It is an arithmetic number, because the mean of its divisors is an integer number (2617909110).

Almost surely, 223123021230 is an apocalyptic number.

23123021230 is a deficient number, since it is larger than the sum of its proper divisors (18763524530).

23123021230 is a wasteful number, since it uses less digits than its factorization.

23123021230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14728203.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 23123021230 its reverse (3212032132), we get a palindrome (26335053362).

The spelling of 23123021230 in words is "twenty-three billion, one hundred twenty-three million, twenty-one thousand, two hundred thirty".

Divisors: 1 2 5 10 157 314 785 1570 14728039 29456078 73640195 147280390 2312302123 4624604246 11561510615 23123021230