1201310241 has 4 divisors (see below), whose sum is σ = 1601746992. Its totient is φ = 800873492.

The previous prime is 1201310237. The next prime is 1201310249. The reversal of 1201310241 is 1420131021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1201310241 - 2² = 1201310237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1201310241.

It is not an unprimeable number, because it can be changed into a prime (1201310249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200218371 + ... + 200218376.

It is an arithmetic number, because the mean of its divisors is an integer number (400436748).

Almost surely, 2^1201310241 is an apocalyptic number.

It is an amenable number.

1201310241 is a deficient number, since it is larger than the sum of its proper divisors (400436751).

1201310241 is an equidigital number, since it uses as much as digits as its factorization.

1201310241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400436750.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1201310241 is about 34659.9226917776. The cubic root of 1201310241 is about 1063.0451892892.

Adding to 1201310241 its reverse (1420131021), we get a palindrome (2621441262).

The spelling of 1201310241 in words is "one billion, two hundred one million, three hundred ten thousand, two hundred forty-one".