1133445531 has 8 divisors (see below), whose sum is σ = 1552105744. Its totient is φ = 735207840.

The previous prime is 1133445517. The next prime is 1133445553. The reversal of 1133445531 is 1355443311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1133445531 - 2²⁵ = 1099891099 is a prime.

It is a super-2 number, since 2×1133445531² = 2569397543487743922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1133445571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5105500 + ... + 5105721.

It is an arithmetic number, because the mean of its divisors is an integer number (194013218).

Almost surely, 2^1133445531 is an apocalyptic number.

1133445531 is a deficient number, since it is larger than the sum of its proper divisors (418660213).

1133445531 is a wasteful number, since it uses less digits than its factorization.

1133445531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10211261.

The product of its digits is 10800, while the sum is 30.

The square root of 1133445531 is about 33666.6828036265. The cubic root of 1133445531 is about 1042.6380055269.

Adding to 1133445531 its reverse (1355443311), we get a palindrome (2488888842).

It can be divided in two parts, 11334 and 45531, that added together give a palindrome (56865).

The spelling of 1133445531 in words is "one billion, one hundred thirty-three million, four hundred forty-five thousand, five hundred thirty-one".