1001133131 has 4 divisors (see below), whose sum is σ = 1001368200. Its totient is φ = 1000898064.

The previous prime is 1001133101. The next prime is 1001133139. The reversal of 1001133131 is 1313311001.

It is a happy number.

1001133131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 1001133131 - 2¹⁰ = 1001132107 is a prime.

It is a super-2 number, since 2×1001133131² = 2004535091971726322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001133139) 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, 111026 + ... + 119703.

It is an arithmetic number, because the mean of its divisors is an integer number (250342050).

Almost surely, 2^1001133131 is an apocalyptic number.

1001133131 is a deficient number, since it is larger than the sum of its proper divisors (235069).

1001133131 is an equidigital number, since it uses as much as digits as its factorization.

1001133131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235068.

The product of its (nonzero) digits is 27, while the sum is 14.

The square root of 1001133131 is about 31640.6879033943. The cubic root of 1001133131 is about 1000.3775677580.

Adding to 1001133131 its reverse (1313311001), we get a palindrome (2314444132).

The spelling of 1001133131 in words is "one billion, one million, one hundred thirty-three thousand, one hundred thirty-one".