1205313455 has 4 divisors (see below), whose sum is σ = 1446376152. Its totient is φ = 964250760.

The previous prime is 1205313437. The next prime is 1205313463. The reversal of 1205313455 is 5543135021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5543135021 = 47 ⋅117939043.

It is not a de Polignac number, because 1205313455 - 2³⁰ = 131571631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120531341 + ... + 120531350.

It is an arithmetic number, because the mean of its divisors is an integer number (361594038).

Almost surely, 2^1205313455 is an apocalyptic number.

1205313455 is a deficient number, since it is larger than the sum of its proper divisors (241062697).

1205313455 is an equidigital number, since it uses as much as digits as its factorization.

1205313455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241062696.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 1205313455 is about 34717.6245587166. The cubic root of 1205313455 is about 1064.2247011510.

Adding to 1205313455 its reverse (5543135021), we get a palindrome (6748448476).

The spelling of 1205313455 in words is "one billion, two hundred five million, three hundred thirteen thousand, four hundred fifty-five".