1343631 has 4 divisors (see below), whose sum is σ = 1791512. Its totient is φ = 895752.

The previous prime is 1343627. The next prime is 1343651. The reversal of 1343631 is 1363431.

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

It is not a de Polignac number, because 1343631 - 2² = 1343627 is a prime.

It is a super-2 number, since 2×1343631² = 3610688528322, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1343598 and 1343607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1343651) 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, 223936 + ... + 223941.

It is an arithmetic number, because the mean of its divisors is an integer number (447878).

2^1343631 is an apocalyptic number.

1343631 is a deficient number, since it is larger than the sum of its proper divisors (447881).

1343631 is an equidigital number, since it uses as much as digits as its factorization.

1343631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447880.

The product of its digits is 648, while the sum is 21.

The square root of 1343631 is about 1159.1509824005. The cubic root of 1343631 is about 110.3468664977.

The spelling of 1343631 in words is "one million, three hundred forty-three thousand, six hundred thirty-one".