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2131231210223 = 29269987272201
BaseRepresentation
bin11111000000110111010…
…001110111101011101111
321112202002011112001111112
4133000313101313223233
5234404230142211343
64311024001142235
7306655616246423
oct37006721675357
97482064461445
102131231210223
11751939503425
122a506902a97b
13125c8853a15b
147521b690b83
153a688e94218
hex1f037477aef

2131231210223 has 8 divisors (see below), whose sum is σ = 2204738207280. Its totient is φ = 2057725297600.

The previous prime is 2131231210193. The next prime is 2131231210237. The reversal of 2131231210223 is 3220121321312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2131231210223 - 222 = 2131227015919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131231210123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7693523 + ... + 7965723.

It is an arithmetic number, because the mean of its divisors is an integer number (275592275910).

Almost surely, 22131231210223 is an apocalyptic number.

2131231210223 is a deficient number, since it is larger than the sum of its proper divisors (73506997057).

2131231210223 is a wasteful number, since it uses less digits than its factorization.

2131231210223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542217.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 2131231210223 its reverse (3220121321312), we get a palindrome (5351352531535).

The spelling of 2131231210223 in words is "two trillion, one hundred thirty-one billion, two hundred thirty-one million, two hundred ten thousand, two hundred twenty-three".

Divisors: 1 29 269987 272201 7829623 7893829 73490731387 2131231210223