1343261 has 4 divisors (see below), whose sum is σ = 1386624. Its totient is φ = 1299900.

The previous prime is 1343257. The next prime is 1343263. The reversal of 1343261 is 1623431.

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 1343261 - 2² = 1343257 is a prime.

It is a super-2 number, since 2×1343261² = 3608700228242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1343263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21635 + ... + 21696.

It is an arithmetic number, because the mean of its divisors is an integer number (346656).

2^1343261 is an apocalyptic number.

It is an amenable number.

1343261 is a deficient number, since it is larger than the sum of its proper divisors (43363).

1343261 is an equidigital number, since it uses as much as digits as its factorization.

1343261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43362.

The product of its digits is 432, while the sum is 20.

The square root of 1343261 is about 1158.9913718402. The cubic root of 1343261 is about 110.3367367103.

Adding to 1343261 its sum of digits (20), we get a square (1343281 = 1159²).

Adding to 1343261 its reverse (1623431), we get a palindrome (2966692).

The spelling of 1343261 in words is "one million, three hundred forty-three thousand, two hundred sixty-one".