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23013100020 = 2235467981973
BaseRepresentation
bin10101011011101100…
…000000100111110100
32012101211012121102210
4111123230000213310
5334112323200040
614323322333420
71443200060031
oct253354004764
965354177383
1023013100020
11983a327729
12456305a270
1322299c7a61
14118453c388
158ea54b480
hex55bb009f4

23013100020 has 48 divisors (see below), whose sum is σ = 64451237760. Its totient is φ = 6135440256.

The previous prime is 23013099947. The next prime is 23013100051. The reversal of 23013100020 is 2000131032.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 23013099969 and 23013100005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 239754 + ... + 321726.

It is an arithmetic number, because the mean of its divisors is an integer number (1342734120).

Almost surely, 223013100020 is an apocalyptic number.

23013100020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23013100020 is an abundant number, since it is smaller than the sum of its proper divisors (41438137740).

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

23013100020 is a wasteful number, since it uses less digits than its factorization.

23013100020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86664 (or 86662 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 23013100020 its reverse (2000131032), we get a palindrome (25013231052).

The spelling of 23013100020 in words is "twenty-three billion, thirteen million, one hundred thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 4679 9358 14037 18716 23395 28074 46790 56148 70185 81973 93580 140370 163946 245919 280740 327892 409865 491838 819730 983676 1229595 1639460 2459190 4918380 383551667 767103334 1150655001 1534206668 1917758335 2301310002 3835516670 4602620004 5753275005 7671033340 11506550010 23013100020