1011000401 has 4 divisors (see below), whose sum is σ = 1017440052. Its totient is φ = 1004560752.

The previous prime is 1011000379. The next prime is 1011000439. The reversal of 1011000401 is 1040001101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 396010000 + 614990401 = 19900^2 + 24799^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011000401 - 2¹⁰ = 1010999377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011000451) 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, 3219590 + ... + 3219903.

It is an arithmetic number, because the mean of its divisors is an integer number (254360013).

Almost surely, 2^1011000401 is an apocalyptic number.

It is an amenable number.

1011000401 is a deficient number, since it is larger than the sum of its proper divisors (6439651).

1011000401 is an equidigital number, since it uses as much as digits as its factorization.

1011000401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6439650.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 1011000401 is about 31796.2324969484. The cubic root of 1011000401 is about 1003.6534364804.

Adding to 1011000401 its reverse (1040001101), we get a palindrome (2051001502).

The spelling of 1011000401 in words is "one billion, eleven million, four hundred one", and thus it is an aban number.