1000332401 has 4 divisors (see below), whose sum is σ = 1000673652. Its totient is φ = 999991152.

The previous prime is 1000332383. The next prime is 1000332427. The reversal of 1000332401 is 1042330001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1042330001 = 11579 ⋅90019.

It can be written as a sum of positive squares in 2 ways, for example, as 173712400 + 826620001 = 13180^2 + 28751^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000332401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1000332451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166190 + ... + 172103.

It is an arithmetic number, because the mean of its divisors is an integer number (250168413).

Almost surely, 2^1000332401 is an apocalyptic number.

It is an amenable number.

1000332401 is a deficient number, since it is larger than the sum of its proper divisors (341251).

1000332401 is an equidigital number, since it uses as much as digits as its factorization.

1000332401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341250.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1000332401 is about 31628.0318862872. The cubic root of 1000332401 is about 1000.1107880589.

Adding to 1000332401 its reverse (1042330001), we get a palindrome (2042662402).

The spelling of 1000332401 in words is "one billion, three hundred thirty-two thousand, four hundred one".