1001231133 has 16 divisors (see below), whose sum is σ = 1615432320. Its totient is φ = 538477056.

The previous prime is 1001231131. The next prime is 1001231159. The reversal of 1001231133 is 3311321001.

It is not a de Polignac number, because 1001231133 - 2¹ = 1001231131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001231131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1401928 + ... + 1402641.

It is an arithmetic number, because the mean of its divisors is an integer number (100964520).

Almost surely, 2^1001231133 is an apocalyptic number.

It is an amenable number.

1001231133 is a deficient number, since it is larger than the sum of its proper divisors (614201187).

1001231133 is a wasteful number, since it uses less digits than its factorization.

1001231133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2804596.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1001231133 is about 31642.2365359973. The cubic root of 1001231133 is about 1000.4102093719.

Adding to 1001231133 its reverse (3311321001), we get a palindrome (4312552134).

The spelling of 1001231133 in words is "one billion, one million, two hundred thirty-one thousand, one hundred thirty-three".