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1230023106 = 232135256509
BaseRepresentation
bin100100101010000…
…1010100111000010
310011201111122111100
41021110022213002
510004341214411
6322015355230
742324011124
oct11124124702
93151448440
101230023106
11581352624
122a3b22b16
13167aa6b30
14b9507214
1572ebb456
hex4950a9c2

1230023106 has 24 divisors (see below), whose sum is σ = 2870054460. Its totient is φ = 378468576.

The previous prime is 1230023089. The next prime is 1230023107. The reversal of 1230023106 is 6013200321.

It can be written as a sum of positive squares in 2 ways, for example, as 1226750625 + 3272481 = 35025^2 + 1809^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1230023107) 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, 2628021 + ... + 2628488.

Almost surely, 21230023106 is an apocalyptic number.

1230023106 is an abundant number, since it is smaller than the sum of its proper divisors (1640031354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1230023106 is a wasteful number, since it uses less digits than its factorization.

1230023106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5256530 (or 5256527 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1230023106 is about 35071.6852460785. The cubic root of 1230023106 is about 1071.4479787875.

Adding to 1230023106 its reverse (6013200321), we get a palindrome (7243223427).

The spelling of 1230023106 in words is "one billion, two hundred thirty million, twenty-three thousand, one hundred six".

Divisors: 1 2 3 6 9 13 18 26 39 78 117 234 5256509 10513018 15769527 31539054 47308581 68334617 94617162 136669234 205003851 410007702 615011553 1230023106