1340143331453 has 4 divisors (see below), whose sum is σ = 1340145783900. Its totient is φ = 1340140879008.

The previous prime is 1340143331413. The next prime is 1340143331473. The reversal of 1340143331453 is 3541333410431.

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 854861120569 + 485282210884 = 924587^2 + 696622^2 .

It is a cyclic number.

It is not a de Polignac number, because 1340143331453 - 2³⁶ = 1271423854717 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 (1340143331413) 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, 6623 + ... + 1637171.

It is an arithmetic number, because the mean of its divisors is an integer number (335036445975).

Almost surely, 2^{1340143331453} is an apocalyptic number.

It is an amenable number.

1340143331453 is a deficient number, since it is larger than the sum of its proper divisors (2452447).

1340143331453 is an equidigital number, since it uses as much as digits as its factorization.

1340143331453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2452446.

The product of its (nonzero) digits is 77760, while the sum is 35.

Adding to 1340143331453 its reverse (3541333410431), we get a palindrome (4881476741884).

The spelling of 1340143331453 in words is "one trillion, three hundred forty billion, one hundred forty-three million, three hundred thirty-one thousand, four hundred fifty-three".