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23013123020 = 2251150656151
BaseRepresentation
bin10101011011101100…
…000110001111001100
32012101211020202222122
4111123230012033030
5334112324414040
614323323032112
71443200214056
oct253354061714
965354222878
1023013123020
11983a342a38
12456306b638
132229a05374
1411845468d6
158ea5531b5
hex55bb063cc

23013123020 has 12 divisors (see below), whose sum is σ = 48327558384. Its totient is φ = 9205249200.

The previous prime is 23013123013. The next prime is 23013123031. The reversal of 23013123020 is 2032131032.

It is a super-2 number, since 2×230131230202 (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23013123020.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 575328056 + ... + 575328095.

It is an arithmetic number, because the mean of its divisors is an integer number (4027296532).

Almost surely, 223013123020 is an apocalyptic number.

23013123020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23013123020 is an abundant number, since it is smaller than the sum of its proper divisors (25314435364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23013123020 is a wasteful number, since it uses less digits than its factorization.

23013123020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150656160 (or 1150656158 counting only the distinct ones).

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

Adding to 23013123020 its reverse (2032131032), we get a palindrome (25045254052).

The spelling of 23013123020 in words is "twenty-three billion, thirteen million, one hundred twenty-three thousand, twenty".

Divisors: 1 2 4 5 10 20 1150656151 2301312302 4602624604 5753280755 11506561510 23013123020