1343312231 has 4 divisors (see below), whose sum is σ = 1350272592. Its totient is φ = 1336351872.

The previous prime is 1343312227. The next prime is 1343312249. The reversal of 1343312231 is 1322133431.

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 1343312231 - 2² = 1343312227 is a prime.

It is a super-2 number, since 2×1343312231² = 3608975499908394722, 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 = 1343312197 and 1343312206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1343312251) 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, 3479891 + ... + 3480276.

It is an arithmetic number, because the mean of its divisors is an integer number (337568148).

Almost surely, 2^1343312231 is an apocalyptic number.

1343312231 is a deficient number, since it is larger than the sum of its proper divisors (6960361).

1343312231 is an equidigital number, since it uses as much as digits as its factorization.

1343312231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6960360.

The product of its digits is 1296, while the sum is 23.

The square root of 1343312231 is about 36651.2241405386. The cubic root of 1343312231 is about 1103.3813941352.

Adding to 1343312231 its reverse (1322133431), we get a palindrome (2665445662).

The spelling of 1343312231 in words is "one billion, three hundred forty-three million, three hundred twelve thousand, two hundred thirty-one".