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20223203031 = 32231033532687
BaseRepresentation
bin10010110101011001…
…011001011011010111
31221012101112011020200
4102311121121123113
5312404114444111
613142421231543
71314102250413
oct226531313327
957171464220
1020223203031
11863851a839
123b048625b3
131ba39c7235
14d9bbc7d43
157d565a256
hex4b56596d7

20223203031 has 48 divisors (see below), whose sum is σ = 30875959296. Its totient is φ = 12729835008.

The previous prime is 20223203029. The next prime is 20223203051. The reversal of 20223203031 is 13030232202.

It is a happy number.

20223203031 is a `hidden beast` number, since 20 + 22 + 320 + 303 + 1 = 666.

It is not a de Polignac number, because 20223203031 - 21 = 20223203029 is a prime.

It is a super-2 number, since 2×202232030312 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20223202995 and 20223203013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20223203051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7524970 + ... + 7527656.

It is an arithmetic number, because the mean of its divisors is an integer number (643249152).

Almost surely, 220223203031 is an apocalyptic number.

20223203031 is a deficient number, since it is larger than the sum of its proper divisors (10652756265).

20223203031 is a wasteful number, since it uses less digits than its factorization.

20223203031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3172 (or 3169 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 20223203031 its reverse (13030232202), we get a palindrome (33253435233).

The spelling of 20223203031 in words is "twenty billion, two hundred twenty-three million, two hundred three thousand, thirty-one".

Divisors: 1 3 9 23 69 103 207 309 353 927 1059 2369 2687 3177 7107 8061 8119 21321 24183 24357 36359 61801 73071 109077 185403 276761 327231 556209 830283 836257 948511 2490849 2508771 2845533 6365503 7526313 8536599 19096509 21815753 57289527 65447259 97696633 196341777 293089899 879269697 2247022559 6741067677 20223203031