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131213230222020 = 223518111207557797
BaseRepresentation
bin11101110101011001110101…
…111110100010101011000100
3122012120212021121201022110020
4131311121311332202223010
5114144244143414101040
61143022305324055140
736431562110351412
oct3565316576425304
9565525247638406
10131213230222020
1138899244813a01
12128720053944b0
13582a47bb4ac1b
142458a7b8602b2
151028255a0ecd0
hex775675fa2ac4

131213230222020 has 48 divisors (see below), whose sum is σ = 367599914635968. Its totient is φ = 34970873772160.

The previous prime is 131213230222003. The next prime is 131213230222031. The reversal of 131213230222020 is 20222032312131.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 603670239 + ... + 603887558.

It is an arithmetic number, because the mean of its divisors is an integer number (7658331554916).

Almost surely, 2131213230222020 is an apocalyptic number.

131213230222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131213230222020 is an abundant number, since it is smaller than the sum of its proper divisors (236386684413948).

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

131213230222020 is a wasteful number, since it uses less digits than its factorization.

131213230222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207559620 (or 1207559618 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 131213230222020 its reverse (20222032312131), we get a palindrome (151435262534151).

The spelling of 131213230222020 in words is "one hundred thirty-one trillion, two hundred thirteen billion, two hundred thirty million, two hundred twenty-two thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 1811 3622 5433 7244 9055 10866 18110 21732 27165 36220 54330 108660 1207557797 2415115594 3622673391 4830231188 6037788985 7245346782 12075577970 14490693564 18113366955 24151155940 36226733910 72453467820 2186887170367 4373774340734 6560661511101 8747548681468 10934435851835 13121323022202 21868871703670 26242646044404 32803307555505 43737743407340 65606615111010 131213230222020