1205312053 has 16 divisors (see below), whose sum is σ = 1394349120. Its totient is φ = 1029715200.

The previous prime is 1205312047. The next prime is 1205312071. The reversal of 1205312053 is 3502135021.

It is a cyclic number.

It is not a de Polignac number, because 1205312053 - 2⁵ = 1205312021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205312153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128038 + ... + 137128.

It is an arithmetic number, because the mean of its divisors is an integer number (87146820).

Almost surely, 2^1205312053 is an apocalyptic number.

It is an amenable number.

1205312053 is a deficient number, since it is larger than the sum of its proper divisors (189037067).

1205312053 is a wasteful number, since it uses less digits than its factorization.

1205312053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9828.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 1205312053 is about 34717.6043672371. The cubic root of 1205312053 is about 1064.2242885215.

Adding to 1205312053 its reverse (3502135021), we get a palindrome (4707447074).

The spelling of 1205312053 in words is "one billion, two hundred five million, three hundred twelve thousand, fifty-three".