1001344381 has 2 divisors, whose sum is σ = 1001344382. Its totient is φ = 1001344380.

The previous prime is 1001344373. The next prime is 1001344411. The reversal of 1001344381 is 1834431001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 787307481 + 214036900 = 28059^2 + 14630^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001344381 - 2³ = 1001344373 is a prime.

It is a super-2 number, since 2×1001344381² = 2005381138720546322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001344301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500672190 + 500672191.

It is an arithmetic number, because the mean of its divisors is an integer number (500672191).

Almost surely, 2^1001344381 is an apocalyptic number.

It is an amenable number.

1001344381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001344381 is an equidigital number, since it uses as much as digits as its factorization.

1001344381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 1001344381 is about 31644.0259922785. The cubic root of 1001344381 is about 1000.4479263320.

Adding to 1001344381 its reverse (1834431001), we get a palindrome (2835775382).

The spelling of 1001344381 in words is "one billion, one million, three hundred forty-four thousand, three hundred eighty-one".