1011330401 has 4 divisors (see below), whose sum is σ = 1055301312. Its totient is φ = 967359492.

The previous prime is 1011330389. The next prime is 1011330409. The reversal of 1011330401 is 1040331101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1040331101 = 23 ⋅45231787.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1011330401 is a prime.

It is a super-3 number, since 3×1011330401³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011330409) 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, 21985421 + ... + 21985466.

It is an arithmetic number, because the mean of its divisors is an integer number (263825328).

Almost surely, 2^1011330401 is an apocalyptic number.

It is an amenable number.

1011330401 is a deficient number, since it is larger than the sum of its proper divisors (43970911).

1011330401 is an equidigital number, since it uses as much as digits as its factorization.

1011330401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43970910.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1011330401 is about 31801.4213676056. The cubic root of 1011330401 is about 1003.7626252285.

Adding to 1011330401 its reverse (1040331101), we get a palindrome (2051661502).

The spelling of 1011330401 in words is "one billion, eleven million, three hundred thirty thousand, four hundred one".