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20313230103 = 3237449135859
BaseRepresentation
bin10010111010110000…
…110100101100010111
31221102122221000011200
4102322300310230113
5313100141330403
613155355003543
71316244415125
oct227260645427
957378830150
1020313230103
11868431a481
123b2aa395b3
131bb95585aa
14da9b40915
157dd4deca3
hex4bac34b17

20313230103 has 24 divisors (see below), whose sum is σ = 30201678000. Its totient is φ = 13146706944.

The previous prime is 20313230099. The next prime is 20313230107. The reversal of 20313230103 is 30103231302.

20313230103 is a `hidden beast` number, since 20 + 313 + 230 + 103 = 666.

It is an interprime number because it is at equal distance from previous prime (20313230099) and next prime (20313230107).

It is not a de Polignac number, because 20313230103 - 22 = 20313230099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313230107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81588 + ... + 217446.

It is an arithmetic number, because the mean of its divisors is an integer number (1258403250).

Almost surely, 220313230103 is an apocalyptic number.

20313230103 is a deficient number, since it is larger than the sum of its proper divisors (9888447897).

20313230103 is a wasteful number, since it uses less digits than its factorization.

20313230103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136351 (or 136348 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 20313230103 its reverse (30103231302), we get a palindrome (50416461405).

The spelling of 20313230103 in words is "twenty billion, three hundred thirteen million, two hundred thirty thousand, one hundred three".

Divisors: 1 3 9 37 111 333 449 1347 4041 16613 49839 135859 149517 407577 1222731 5026783 15080349 45241047 61000691 183002073 549006219 2257025567 6771076701 20313230103