1311141653 has 4 divisors (see below), whose sum is σ = 1311681228. Its totient is φ = 1310602080.

The previous prime is 1311141641. The next prime is 1311141673. The reversal of 1311141653 is 3561411131.

It is a happy number.

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 598144849 + 712996804 = 24457^2 + 26702^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311141653 - 2⁶ = 1311141589 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 (1311141673) 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, 266126 + ... + 271007.

It is an arithmetic number, because the mean of its divisors is an integer number (327920307).

Almost surely, 2^1311141653 is an apocalyptic number.

It is an amenable number.

1311141653 is a deficient number, since it is larger than the sum of its proper divisors (539575).

1311141653 is an equidigital number, since it uses as much as digits as its factorization.

1311141653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539574.

The product of its digits is 1080, while the sum is 26.

The square root of 1311141653 is about 36209.6900428601. The cubic root of 1311141653 is about 1094.5019462353.

Adding to 1311141653 its reverse (3561411131), we get a palindrome (4872552784).

The spelling of 1311141653 in words is "one billion, three hundred eleven million, one hundred forty-one thousand, six hundred fifty-three".