1343235421 has 4 divisors (see below), whose sum is σ = 1465347744. Its totient is φ = 1221123100.

The previous prime is 1343235401. The next prime is 1343235469. The reversal of 1343235421 is 1245323431.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1343235421 - 2⁵ = 1343235389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1343235421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1343235401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61056145 + ... + 61056166.

It is an arithmetic number, because the mean of its divisors is an integer number (366336936).

Almost surely, 2^1343235421 is an apocalyptic number.

1343235421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1343235421 is a deficient number, since it is larger than the sum of its proper divisors (122112323).

1343235421 is a wasteful number, since it uses less digits than its factorization.

1343235421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122112322.

The product of its digits is 8640, while the sum is 28.

The square root of 1343235421 is about 36650.1762751559. The cubic root of 1343235421 is about 1103.3603634475.

Adding to 1343235421 its reverse (1245323431), we get a palindrome (2588558852).

The spelling of 1343235421 in words is "one billion, three hundred forty-three million, two hundred thirty-five thousand, four hundred twenty-one".