1301031205 has 32 divisors (see below), whose sum is σ = 1658672640. Its totient is φ = 979220032.

The previous prime is 1301031191. The next prime is 1301031209. The reversal of 1301031205 is 5021301031.

It is a de Polignac number, because none of the positive numbers 2^k-1301031205 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1301031209) 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 31 ways as a sum of consecutive naturals, for example, 5731302 + ... + 5731528.

It is an arithmetic number, because the mean of its divisors is an integer number (51833520).

Almost surely, 2^1301031205 is an apocalyptic number.

It is an amenable number.

1301031205 is a deficient number, since it is larger than the sum of its proper divisors (357641435).

1301031205 is an frugal number, since it uses more digits than its factorization.

1301031205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366 (or 308 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 1301031205 is about 36069.8101602989. The cubic root of 1301031205 is about 1091.6813836629.

Adding to 1301031205 its reverse (5021301031), we get a palindrome (6322332236).

The spelling of 1301031205 in words is "one billion, three hundred one million, thirty-one thousand, two hundred five".