1343251643 has 4 divisors (see below), whose sum is σ = 1366018680. Its totient is φ = 1320484608.

The previous prime is 1343251633. The next prime is 1343251649. The reversal of 1343251643 is 3461523431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3461523431 = 14627 ⋅236653.

It is a cyclic number.

It is not a de Polignac number, because 1343251643 - 2¹² = 1343247547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1343251649) 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, 11383430 + ... + 11383547.

It is an arithmetic number, because the mean of its divisors is an integer number (341504670).

Almost surely, 2^1343251643 is an apocalyptic number.

1343251643 is a deficient number, since it is larger than the sum of its proper divisors (22767037).

1343251643 is an equidigital number, since it uses as much as digits as its factorization.

1343251643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22767036.

The product of its digits is 25920, while the sum is 32.

The square root of 1343251643 is about 36650.3975831095. The cubic root of 1343251643 is about 1103.3648051210.

The spelling of 1343251643 in words is "one billion, three hundred forty-three million, two hundred fifty-one thousand, six hundred forty-three".