1343244240 has 120 divisors (see below), whose sum is σ = 4858100520. Its totient is φ = 330642432.

The previous prime is 1343244223. The next prime is 1343244241. The reversal of 1343244240 is 424423431.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 257409936 + 1085834304 = 16044^2 + 32952^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1343244241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62395 + ... + 81114.

It is an arithmetic number, because the mean of its divisors is an integer number (40484171).

Almost surely, 2^1343244240 is an apocalyptic number.

1343244240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1343244240 is an abundant number, since it is smaller than the sum of its proper divisors (3514856280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1343244240 is a wasteful number, since it uses less digits than its factorization.

1343244240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143541 (or 143532 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 1343244240 is about 36650.2965881587. The cubic root of 1343244240 is about 1103.3627781430.

Adding to 1343244240 its reverse (424423431), we get a palindrome (1767667671).

The spelling of 1343244240 in words is "one billion, three hundred forty-three million, two hundred forty-four thousand, two hundred forty".