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131222031013230 = 2355739776207253
BaseRepresentation
bin11101110101100010000010…
…100010111001010101101110
3122012121200222221221211101020
4131311202002202321111232
5114144420204414410410
61143030322511355010
736432323154012003
oct3565420242712556
9565550887854336
10131222031013230
11388a1a50612673
1212873860822a66
13582b2522600a1
14245927461b8aa
1510285bd48ba70
hex7758828b956e

131222031013230 has 32 divisors (see below), whose sum is σ = 314938365486624. Its totient is φ = 34991931486336.

The previous prime is 131222031013211. The next prime is 131222031013237. The reversal of 131222031013230 is 32310130222131.

It is a self number, because there is not a number n which added to its sum of digits gives 131222031013230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131222031013237) 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, 36381717 + ... + 39825536.

It is an arithmetic number, because the mean of its divisors is an integer number (9841823921457).

Almost surely, 2131222031013230 is an apocalyptic number.

131222031013230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131222031013230 is an abundant number, since it is smaller than the sum of its proper divisors (183716334473394).

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

131222031013230 is a wasteful number, since it uses less digits than its factorization.

131222031013230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76264660.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 131222031013230 its reverse (32310130222131), we get a palindrome (163532161235361).

The spelling of 131222031013230 in words is "one hundred thirty-one trillion, two hundred twenty-two billion, thirty-one million, thirteen thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 57397 114794 172191 286985 344382 573970 860955 1721910 76207253 152414506 228621759 381036265 457243518 762072530 1143108795 2286217590 4374067700441 8748135400882 13122203101323 21870338502205 26244406202646 43740677004410 65611015506615 131222031013230