1000401133 has 2 divisors, whose sum is σ = 1000401134. Its totient is φ = 1000401132.

The previous prime is 1000401131. The next prime is 1000401137. The reversal of 1000401133 is 3311040001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 992124004 + 8277129 = 31498^2 + 2877^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000401133 - 2¹ = 1000401131 is a prime.

Together with 1000401131, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000401131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500200566 + 500200567.

It is an arithmetic number, because the mean of its divisors is an integer number (500200567).

Almost surely, 2^1000401133 is an apocalyptic number.

It is an amenable number.

1000401133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000401133 is an equidigital number, since it uses as much as digits as its factorization.

1000401133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1000401133 is about 31629.1184353911. The cubic root of 1000401133 is about 1000.1336931254.

Adding to 1000401133 its reverse (3311040001), we get a palindrome (4311441134).

The spelling of 1000401133 in words is "one billion, four hundred one thousand, one hundred thirty-three".