1205313401 has 4 divisors (see below), whose sum is σ = 1206417252. Its totient is φ = 1204209552.

The previous prime is 1205313397. The next prime is 1205313433. The reversal of 1205313401 is 1043135021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 543589225 + 661724176 = 23315^2 + 25724^2 .

It is a cyclic number.

It is not a de Polignac number, because 1205313401 - 2² = 1205313397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1205313491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550286 + ... + 552471.

It is an arithmetic number, because the mean of its divisors is an integer number (301604313).

Almost surely, 2^1205313401 is an apocalyptic number.

It is an amenable number.

1205313401 is a deficient number, since it is larger than the sum of its proper divisors (1103851).

1205313401 is a wasteful number, since it uses less digits than its factorization.

1205313401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103850.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1205313401 is about 34717.6237810136. The cubic root of 1205313401 is about 1064.2246852580.

Adding to 1205313401 its reverse (1043135021), we get a palindrome (2248448422).

The spelling of 1205313401 in words is "one billion, two hundred five million, three hundred thirteen thousand, four hundred one".