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1232233213 = 8913845317
BaseRepresentation
bin100100101110010…
…0110001011111101
310011212122221012011
41021130212023331
510010422430323
6322135011221
742351544441
oct11134461375
93155587164
101232233213
11582622062
122a4809b11
1316839baa3
14b9920821
15732a620d
hex497262fd

1232233213 has 4 divisors (see below), whose sum is σ = 1246078620. Its totient is φ = 1218387808.

The previous prime is 1232233141. The next prime is 1232233217. The reversal of 1232233213 is 3123322321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3123322321 = 7446188903.

It can be written as a sum of positive squares in 2 ways, for example, as 220166244 + 1012066969 = 14838^2 + 31813^2 .

It is a cyclic number.

It is not a de Polignac number, because 1232233213 - 213 = 1232225021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232233217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6922570 + ... + 6922747.

It is an arithmetic number, because the mean of its divisors is an integer number (311519655).

Almost surely, 21232233213 is an apocalyptic number.

It is an amenable number.

1232233213 is a deficient number, since it is larger than the sum of its proper divisors (13845407).

1232233213 is an equidigital number, since it uses as much as digits as its factorization.

1232233213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13845406.

The product of its digits is 1296, while the sum is 22.

The square root of 1232233213 is about 35103.1795283561. The cubic root of 1232233213 is about 1072.0893211592.

Adding to 1232233213 its reverse (3123322321), we get a palindrome (4355555534).

The spelling of 1232233213 in words is "one billion, two hundred thirty-two million, two hundred thirty-three thousand, two hundred thirteen".

Divisors: 1 89 13845317 1232233213