1343403331 has 4 divisors (see below), whose sum is σ = 1346857200. Its totient is φ = 1339949464.

The previous prime is 1343403329. The next prime is 1343403367. The reversal of 1343403331 is 1333043431.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1343403331 - 2¹ = 1343403329 is a prime.

It is a super-2 number, since 2×1343403331² = 3609465019483791122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1343403296 and 1343403305.

It is not an unprimeable number, because it can be changed into a prime (1343401331) 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, 1726351 + ... + 1727128.

It is an arithmetic number, because the mean of its divisors is an integer number (336714300).

Almost surely, 2^1343403331 is an apocalyptic number.

1343403331 is a deficient number, since it is larger than the sum of its proper divisors (3453869).

1343403331 is an equidigital number, since it uses as much as digits as its factorization.

1343403331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3453868.

The product of its (nonzero) digits is 3888, while the sum is 25.

The square root of 1343403331 is about 36652.4669156116. The cubic root of 1343403331 is about 1103.4063364062.

Adding to 1343403331 its reverse (1333043431), we get a palindrome (2676446762).

The spelling of 1343403331 in words is "one billion, three hundred forty-three million, four hundred three thousand, three hundred thirty-one".