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203130301231 = 11134150368879
BaseRepresentation
bin1011110100101110000…
…0100110101100101111
3201102022111111110112001
42331023200212230233
511312002324114411
6233152231153131
720450521033444
oct2751340465457
9642274443461
10203130301231
1179168839910
123344bb157a7
13162029c6320
149b8db259cb
15543d1a5dc1
hex2f4b826b2f

203130301231 has 32 divisors (see below), whose sum is σ = 244952709120. Its totient is φ = 165968428800.

The previous prime is 203130301223. The next prime is 203130301277. The reversal of 203130301231 is 132103031302.

It is a cyclic number.

It is not a de Polignac number, because 203130301231 - 23 = 203130301223 is a prime.

It is a super-2 number, since 2×2031303012312 (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 203130301199 and 203130301208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203130301331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2914650 + ... + 2983528.

It is an arithmetic number, because the mean of its divisors is an integer number (7654772160).

Almost surely, 2203130301231 is an apocalyptic number.

203130301231 is a deficient number, since it is larger than the sum of its proper divisors (41822407889).

203130301231 is a wasteful number, since it uses less digits than its factorization.

203130301231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69447.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 203130301231 its reverse (132103031302), we get a palindrome (335233332533).

The spelling of 203130301231 in words is "two hundred three billion, one hundred thirty million, three hundred one thousand, two hundred thirty-one".

Divisors: 1 11 13 41 143 451 503 533 5533 5863 6539 20623 68879 71929 226853 268099 757669 895427 2824039 2949089 9849697 31064429 34646137 36712507 381107507 403837577 450399781 1420491617 4954397591 15625407787 18466391021 203130301231