1343240545 has 4 divisors (see below), whose sum is σ = 1611888660. Its totient is φ = 1074592432.

The previous prime is 1343240501. The next prime is 1343240603. The reversal of 1343240545 is 5450423431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5450423431 = 17 ⋅320613143.

It can be written as a sum of positive squares in 2 ways, for example, as 1000583424 + 342657121 = 31632^2 + 18511^2 .

It is a cyclic number.

It is not a de Polignac number, because 1343240545 - 2⁷ = 1343240417 is a prime.

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, 134324050 + ... + 134324059.

It is an arithmetic number, because the mean of its divisors is an integer number (402972165).

Almost surely, 2^1343240545 is an apocalyptic number.

It is an amenable number.

1343240545 is a deficient number, since it is larger than the sum of its proper divisors (268648115).

1343240545 is an equidigital number, since it uses as much as digits as its factorization.

1343240545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268648114.

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 1343240545 is about 36650.2461792551. The cubic root of 1343240545 is about 1103.3617664310.

Adding to 1343240545 its reverse (5450423431), we get a palindrome (6793663976).

The spelling of 1343240545 in words is "one billion, three hundred forty-three million, two hundred forty thousand, five hundred forty-five".