1340355053 has 4 divisors (see below), whose sum is σ = 1340568348. Its totient is φ = 1340141760.

The previous prime is 1340355017. The next prime is 1340355077. The reversal of 1340355053 is 3505530431.

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 1183153609 + 157201444 = 34397^2 + 12538^2 .

It is a cyclic number.

It is not a de Polignac number, because 1340355053 - 2¹⁸ = 1340092909 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 (1340355853) 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, 96926 + ... + 109887.

It is an arithmetic number, because the mean of its divisors is an integer number (335142087).

Almost surely, 2^1340355053 is an apocalyptic number.

It is an amenable number.

1340355053 is a deficient number, since it is larger than the sum of its proper divisors (213295).

1340355053 is an equidigital number, since it uses as much as digits as its factorization.

1340355053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213294.

The product of its (nonzero) digits is 13500, while the sum is 29.

The square root of 1340355053 is about 36610.8597686533. The cubic root of 1340355053 is about 1102.5711351444.

Adding to 1340355053 its reverse (3505530431), we get a palindrome (4845885484).

The spelling of 1340355053 in words is "one billion, three hundred forty million, three hundred fifty-five thousand, fifty-three".