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131123230110 = 235553960177
BaseRepresentation
bin111101000011110001…
…1011011010110011110
3110112110012111020200000
41322013203123112132
54122020021330420
6140123121515130
712321233031465
oct1720743332636
9415405436600
10131123230110
1150677710584
12214b4aa2aa6
13c4987c9c32
1464bc7339dc
153626787690
hex1e878db59e

131123230110 has 48 divisors (see below), whose sum is σ = 353547086256. Its totient is φ = 34966194048.

The previous prime is 131123230109. The next prime is 131123230123. The reversal of 131123230110 is 11032321131.

131123230110 is a `hidden beast` number, since 131 + 1 + 232 + 301 + 1 + 0 = 666.

It is a super-2 number, since 2×1311232301102 (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26977659 + ... + 26982518.

It is an arithmetic number, because the mean of its divisors is an integer number (7365564297).

Almost surely, 2131123230110 is an apocalyptic number.

131123230110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131123230110 is an abundant number, since it is smaller than the sum of its proper divisors (222423856146).

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

131123230110 is an equidigital number, since it uses as much as digits as its factorization.

131123230110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53960199 (or 53960187 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 131123230110 its reverse (11032321131), we get a palindrome (142155551241).

The spelling of 131123230110 in words is "one hundred thirty-one billion, one hundred twenty-three million, two hundred thirty thousand, one hundred ten".

Divisors: 1 2 3 5 6 9 10 15 18 27 30 45 54 81 90 135 162 243 270 405 486 810 1215 2430 53960177 107920354 161880531 269800885 323761062 485641593 539601770 809402655 971283186 1456924779 1618805310 2428207965 2913849558 4370774337 4856415930 7284623895 8741548674 13112323011 14569247790 21853871685 26224646022 43707743370 65561615055 131123230110