1001213344 has 12 divisors (see below), whose sum is σ = 1971138834. Its totient is φ = 500606656.

The previous prime is 1001213329. The next prime is 1001213347. The reversal of 1001213344 is 4433121001.

It can be written as a sum of positive squares in only one way, i.e., 954810000 + 46403344 = 30900^2 + 6812^2 .

It is a super-3 number, since 3×1001213344³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1001213347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15643927 + ... + 15643990.

Almost surely, 2^1001213344 is an apocalyptic number.

It is an amenable number.

1001213344 is a deficient number, since it is larger than the sum of its proper divisors (969925490).

1001213344 is an equidigital number, since it uses as much as digits as its factorization.

1001213344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31287927 (or 31287919 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1001213344 is about 31641.9554389421. The cubic root of 1001213344 is about 1000.4042845320.

Adding to 1001213344 its reverse (4433121001), we get a palindrome (5434334345).

The spelling of 1001213344 in words is "one billion, one million, two hundred thirteen thousand, three hundred forty-four".