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20203010023 = 721921700333
BaseRepresentation
bin10010110100001100…
…010111011111100111
31221010222112020122111
4102310030113133213
5312333432310043
613140420341451
71313435515600
oct226414273747
957128466574
1020203010023
1186280884a9
123ab9b44887
131b9c777001
14d9924cda7
157d39bc09d
hex4b43177e7

20203010023 has 12 divisors (see below), whose sum is σ = 24738380760. Its totient is φ = 16405450992.

The previous prime is 20203009999. The next prime is 20203010033. The reversal of 20203010023 is 32001030202.

It is a happy number.

It is not a de Polignac number, because 20203010023 - 213 = 20203001831 is a prime.

It is a super-2 number, since 2×202030100232 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20203009985 and 20203010012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20203010033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10849236 + ... + 10851097.

It is an arithmetic number, because the mean of its divisors is an integer number (2061531730).

Almost surely, 220203010023 is an apocalyptic number.

20203010023 is a deficient number, since it is larger than the sum of its proper divisors (4535370737).

20203010023 is a wasteful number, since it uses less digits than its factorization.

20203010023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21700366 (or 21700359 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 20203010023 its reverse (32001030202), we get a palindrome (52204040225).

The spelling of 20203010023 in words is "twenty billion, two hundred three million, ten thousand, twenty-three".

Divisors: 1 7 19 49 133 931 21700333 151902331 412306327 1063316317 2886144289 20203010023