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23030123403 = 371960955927
BaseRepresentation
bin10101011100101100…
…111100101110001011
32012110000020111010110
4111130230330232023
5334131202422103
614325131245403
71443464550630
oct253454745613
965400214113
1023030123403
1198489a4641
1245688a9863
1322303a8371
1411868d0187
158ebcb0403
hex55cb3cb8b

23030123403 has 16 divisors (see below), whose sum is σ = 35095938560. Its totient is φ = 13159164096.

The previous prime is 23030123381. The next prime is 23030123429. The reversal of 23030123403 is 30432103032.

It is not a de Polignac number, because 23030123403 - 26 = 23030123339 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23030123403.

It is not an unprimeable number, because it can be changed into a prime (23030123503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 383826 + ... + 439752.

It is an arithmetic number, because the mean of its divisors is an integer number (2193496160).

Almost surely, 223030123403 is an apocalyptic number.

23030123403 is a deficient number, since it is larger than the sum of its proper divisors (12065815157).

23030123403 is a wasteful number, since it uses less digits than its factorization.

23030123403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75546.

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 23030123403 its reverse (30432103032), we get a palindrome (53462226435).

The spelling of 23030123403 in words is "twenty-three billion, thirty million, one hundred twenty-three thousand, four hundred three".

Divisors: 1 3 7 21 19609 55927 58827 137263 167781 391489 411789 1174467 1096672543 3290017629 7676707801 23030123403