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1232010001 = 8913842809
BaseRepresentation
bin100100101101110…
…1111101100010001
310011212020121000001
41021123233230101
510010343310001
6322130130001
742346624615
oct11133575421
93155217001
101232010001
1158248a392
122a4720901
13168321301
14b98a3345
1573260001
hex496efb11

1232010001 has 4 divisors (see below), whose sum is σ = 1245852900. Its totient is φ = 1218167104.

The previous prime is 1232009983. The next prime is 1232010007. The reversal of 1232010001 is 1000102321.

It is a Cunningham number, because it is equal to 351002+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1000102321 = 1473167891.

It can be written as a sum of positive squares in 2 ways, for example, as 236544400 + 995465601 = 15380^2 + 31551^2 .

It is a cyclic number.

It is not a de Polignac number, because 1232010001 - 29 = 1232009489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1232010001.

It is not an unprimeable number, because it can be changed into a prime (1232010007) 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, 6921316 + ... + 6921493.

It is an arithmetic number, because the mean of its divisors is an integer number (311463225).

Almost surely, 21232010001 is an apocalyptic number.

It is an amenable number.

1232010001 is a deficient number, since it is larger than the sum of its proper divisors (13842899).

1232010001 is an equidigital number, since it uses as much as digits as its factorization.

1232010001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13842898.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1232010001 is about 35100.0000142450. Note that the first 4 decimals coincide. The cubic root of 1232010001 is about 1072.0245829668.

Adding to 1232010001 its reverse (1000102321), we get a palindrome (2232112322).

The spelling of 1232010001 in words is "one billion, two hundred thirty-two million, ten thousand, one".

Divisors: 1 89 13842809 1232010001