1344431040 has 56 divisors (see below), whose sum is σ = 4268571600. Its totient is φ = 358514688.

The previous prime is 1344431003. The next prime is 1344431047. The reversal of 1344431040 is 401344431.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1344431040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1344431047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 699265 + ... + 701184.

Almost surely, 2^1344431040 is an apocalyptic number.

1344431040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1344431040 is an abundant number, since it is smaller than the sum of its proper divisors (2924140560).

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

1344431040 is a wasteful number, since it uses less digits than its factorization.

1344431040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1400469 (or 1400459 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1344431040 is about 36666.4838783323. The cubic root of 1344431040 is about 1103.6876347953.

Adding to 1344431040 its reverse (401344431), we get a palindrome (1745775471).

The spelling of 1344431040 in words is "one billion, three hundred forty-four million, four hundred thirty-one thousand, forty".