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11212031230 = 251835361091
BaseRepresentation
bin10100111000100101…
…00000010011111110
31001221101102012101221
422130102200103332
5140430234444410
65052320423554
7544562456461
oct123422402376
931841365357
1011212031230
114833999014
12220aa77bba
131098b34c0a
147851052d8
154594c34da
hex29c4a04fe

11212031230 has 16 divisors (see below), whose sum is σ = 20183086224. Its totient is φ = 4484494720.

The previous prime is 11212031213. The next prime is 11212031291. The reversal of 11212031230 is 3213021211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152985 + ... + 214075.

It is an arithmetic number, because the mean of its divisors is an integer number (1261442889).

Almost surely, 211212031230 is an apocalyptic number.

11212031230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11212031230 is a deficient number, since it is larger than the sum of its proper divisors (8971054994).

11212031230 is a wasteful number, since it uses less digits than its factorization.

11212031230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79451.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 11212031230 its reverse (3213021211), we get a palindrome (14425052441).

The spelling of 11212031230 in words is "eleven billion, two hundred twelve million, thirty-one thousand, two hundred thirty".

Divisors: 1 2 5 10 18353 36706 61091 91765 122182 183530 305455 610910 1121203123 2242406246 5606015615 11212031230