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13203141021 = 347191225577
BaseRepresentation
bin11000100101111011…
…11111000110011101
31021002011001001120000
430102331333012131
5204020001003041
610022045044513
7645120563340
oct142275770635
937064031500
1013203141021
1156659132a4
122685856739
1313254b88a5
148d3728457
155241cbbb6
hex312f7f19d

13203141021 has 40 divisors (see below), whose sum is σ = 23727190080. Its totient is φ = 7147559232.

The previous prime is 13203141019. The next prime is 13203141023. The reversal of 13203141021 is 12014130231.

13203141021 is a `hidden beast` number, since 1 + 320 + 314 + 10 + 21 = 666.

It is an interprime number because it is at equal distance from previous prime (13203141019) and next prime (13203141023).

It is not a de Polignac number, because 13203141021 - 21 = 13203141019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13203140985 and 13203141003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13203141023) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 602016 + ... + 623561.

It is an arithmetic number, because the mean of its divisors is an integer number (593179752).

Almost surely, 213203141021 is an apocalyptic number.

It is an amenable number.

13203141021 is a deficient number, since it is larger than the sum of its proper divisors (10524049059).

13203141021 is a wasteful number, since it uses less digits than its factorization.

13203141021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1225615 (or 1225606 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 13203141021 its reverse (12014130231), we get a palindrome (25217271252).

The spelling of 13203141021 in words is "thirteen billion, two hundred three million, one hundred forty-one thousand, twenty-one".

Divisors: 1 3 7 9 19 21 27 57 63 81 133 171 189 399 513 567 1197 1539 3591 10773 1225577 3676731 8579039 11030193 23285963 25737117 33090579 69857889 77211351 99271737 163001741 209573667 231634053 489005223 628721001 694902159 1467015669 1886163003 4401047007 13203141021