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1230123033 = 32577236881
BaseRepresentation
bin100100101010010…
…0011000000011001
310011201200201120100
41021110203000121
510004402414113
6322021450013
742324605346
oct11124430031
93151621510
101230123033
11581410707
122a3b70909
13167b10469
14b95317cd
1572edad73
hex49523019

1230123033 has 12 divisors (see below), whose sum is σ = 1779931348. Its totient is φ = 818657280.

The previous prime is 1230123031. The next prime is 1230123071. The reversal of 1230123033 is 3303210321.

It can be written as a sum of positive squares in 2 ways, for example, as 1065565449 + 164557584 = 32643^2 + 12828^2 .

It is not a de Polignac number, because 1230123033 - 21 = 1230123031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1230122997 and 1230123015.

It is not an unprimeable number, because it can be changed into a prime (1230123031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113248 + ... + 123633.

Almost surely, 21230123033 is an apocalyptic number.

It is an amenable number.

1230123033 is a deficient number, since it is larger than the sum of its proper divisors (549808315).

1230123033 is a wasteful number, since it uses less digits than its factorization.

1230123033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237464 (or 237461 counting only the distinct ones).

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

The square root of 1230123033 is about 35073.1098279009. The cubic root of 1230123033 is about 1071.4769927907.

Adding to 1230123033 its reverse (3303210321), we get a palindrome (4533333354).

The spelling of 1230123033 in words is "one billion, two hundred thirty million, one hundred twenty-three thousand, thirty-three".

Divisors: 1 3 9 577 1731 5193 236881 710643 2131929 136680337 410041011 1230123033