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23230505155 = 511131031512089
BaseRepresentation
bin10101101000101001…
…010110000011000011
32012221222021221012211
4111220221112003003
5340034002131110
614401050202551
71451450015164
oct255051260303
965858257184
1023230505155
1199410183a0
124603a23457
132262a67350
1411a537176b
1590e69298a
hex568a560c3

23230505155 has 64 divisors (see below), whose sum is σ = 33303029760. Its totient is φ = 15334272000.

The previous prime is 23230505143. The next prime is 23230505161. The reversal of 23230505155 is 55150503232.

It is not a de Polignac number, because 23230505155 - 27 = 23230505027 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11119351 + ... + 11121439.

It is an arithmetic number, because the mean of its divisors is an integer number (520359840).

Almost surely, 223230505155 is an apocalyptic number.

23230505155 is a deficient number, since it is larger than the sum of its proper divisors (10072524605).

23230505155 is a wasteful number, since it uses less digits than its factorization.

23230505155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2372.

The product of its (nonzero) digits is 22500, while the sum is 31.

The spelling of 23230505155 in words is "twenty-three billion, two hundred thirty million, five hundred five thousand, one hundred fifty-five".

Divisors: 1 5 11 13 55 65 103 143 151 515 715 755 1133 1339 1661 1963 2089 5665 6695 8305 9815 10445 14729 15553 21593 22979 27157 73645 77765 107965 114895 135785 171083 202189 215167 298727 315439 855415 1010945 1075835 1493635 1577195 2224079 2366837 2797171 3469829 4100707 11120395 11834185 13985855 17349145 20503535 30768881 32490217 45107777 153844405 162451085 225538885 357392387 422372821 1786961935 2111864105 4646101031 23230505155