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1231201 is a prime number
BaseRepresentation
bin100101100100101100001
32022112220001
410230211201
5303344301
642220001
713315336
oct4544541
92275801
101231201
11771024
124b4601
1334152a
1424098d
15194c01
hex12c961

1231201 has 2 divisors, whose sum is σ = 1231202. Its totient is φ = 1231200.

The previous prime is 1231199. The next prime is 1231207. The reversal of 1231201 is 1021321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 810000 + 421201 = 900^2 + 649^2 .

It is a cyclic number.

It is not a de Polignac number, because 1231201 - 21 = 1231199 is a prime.

Together with 1231199, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1231207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615600 + 615601.

It is an arithmetic number, because the mean of its divisors is an integer number (615601).

21231201 is an apocalyptic number.

It is an amenable number.

1231201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231201 is an equidigital number, since it uses as much as digits as its factorization.

1231201 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1231201 is about 1109.5949711494. The cubic root of 1231201 is about 107.1789882800.

Adding to 1231201 its reverse (1021321), we get a palindrome (2252522).

It can be divided in two parts, 12 and 31201, that added together give a palindrome (31213).

The spelling of 1231201 in words is "one million, two hundred thirty-one thousand, two hundred one".