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3231102012220 = 225161555100611
BaseRepresentation
bin101111000001001100101…
…100000000101100111100
3102102220001001110212220001
4233001030230000230330
5410414244103342340
610512203041404044
7452303501643415
oct57011454005474
912386031425801
103231102012220
111036336940005
12442261639624
131a58cb61a9b4
14b255992680c
15590ad42429a
hex2f04cb00b3c

3231102012220 has 12 divisors (see below), whose sum is σ = 6785314225704. Its totient is φ = 1292440804880.

The previous prime is 3231102012197. The next prime is 3231102012251. The reversal of 3231102012220 is 222102011323.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80777550286 + ... + 80777550325.

It is an arithmetic number, because the mean of its divisors is an integer number (565442852142).

Almost surely, 23231102012220 is an apocalyptic number.

It is an amenable number.

3231102012220 is an abundant number, since it is smaller than the sum of its proper divisors (3554212213484).

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

3231102012220 is a wasteful number, since it uses less digits than its factorization.

3231102012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161555100620 (or 161555100618 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 3231102012220 its reverse (222102011323), we get a palindrome (3453204023543).

The spelling of 3231102012220 in words is "three trillion, two hundred thirty-one billion, one hundred two million, twelve thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 161555100611 323110201222 646220402444 807775503055 1615551006110 3231102012220