1343021011 has 4 divisors (see below), whose sum is σ = 1343502952. Its totient is φ = 1342539072.

The previous prime is 1343021003. The next prime is 1343021033. The reversal of 1343021011 is 1101203431.

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 1343021011 - 2³ = 1343021003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1343021041) 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, 236766 + ... + 242371.

It is an arithmetic number, because the mean of its divisors is an integer number (335875738).

Almost surely, 2^1343021011 is an apocalyptic number.

1343021011 is a deficient number, since it is larger than the sum of its proper divisors (481941).

1343021011 is an equidigital number, since it uses as much as digits as its factorization.

1343021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481940.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1343021011 is about 36647.2510701690. The cubic root of 1343021011 is about 1103.3016534402.

Adding to 1343021011 its reverse (1101203431), we get a palindrome (2444224442).

The spelling of 1343021011 in words is "one billion, three hundred forty-three million, twenty-one thousand, eleven".