1344431220 has 48 divisors (see below), whose sum is σ = 4106628288. Its totient is φ = 325922560.

The previous prime is 1344431197. The next prime is 1344431233. The reversal of 1344431220 is 221344431.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1017849 + ... + 1019168.

It is an arithmetic number, because the mean of its divisors is an integer number (85554756).

Almost surely, 2^1344431220 is an apocalyptic number.

1344431220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1344431220 is an abundant number, since it is smaller than the sum of its proper divisors (2762197068).

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

1344431220 is a wasteful number, since it uses less digits than its factorization.

1344431220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2037040 (or 2037038 counting only the distinct ones).

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

The square root of 1344431220 is about 36666.4863328899. The cubic root of 1344431220 is about 1103.6876840513.

Adding to 1344431220 its reverse (221344431), we get a palindrome (1565775651).

The spelling of 1344431220 in words is "one billion, three hundred forty-four million, four hundred thirty-one thousand, two hundred twenty".