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1230112033 = 5323209661
BaseRepresentation
bin100100101010010…
…0000010100100001
310011201200011110221
41021110200110201
510004402041113
6322021323041
742324531313
oct11124402441
93151604427
101230112033
11581403417
122a3b66481
13167b08457
14b952b7b3
1572ed798d
hex49520521

1230112033 has 4 divisors (see below), whose sum is σ = 1253321748. Its totient is φ = 1206902320.

The previous prime is 1230112021. The next prime is 1230112049. The reversal of 1230112033 is 3302110321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 681053409 + 549058624 = 26097^2 + 23432^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230112033 - 213 = 1230103841 is a prime.

It is a super-2 number, since 2×12301120332 = 3026351227462786178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1230111998 and 1230112016.

It is not an unprimeable number, because it can be changed into a prime (1230112073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11604778 + ... + 11604883.

It is an arithmetic number, because the mean of its divisors is an integer number (313330437).

Almost surely, 21230112033 is an apocalyptic number.

It is an amenable number.

1230112033 is a deficient number, since it is larger than the sum of its proper divisors (23209715).

1230112033 is an equidigital number, since it uses as much as digits as its factorization.

1230112033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23209714.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1230112033 is about 35072.9530122572. The cubic root of 1230112033 is about 1071.4737989958.

Adding to 1230112033 its reverse (3302110321), we get a palindrome (4532222354).

The spelling of 1230112033 in words is "one billion, two hundred thirty million, one hundred twelve thousand, thirty-three".

Divisors: 1 53 23209661 1230112033