1133213131 has 4 divisors (see below), whose sum is σ = 1134350752. Its totient is φ = 1132075512.

The previous prime is 1133213117. The next prime is 1133213239. The reversal of 1133213131 is 1313123311.

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 1133213131 - 2²³ = 1124824523 is a prime.

It is a super-2 number, since 2×1133213131² = 2568344000541646322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1133213099 and 1133213108.

It is not an unprimeable number, because it can be changed into a prime (1133213111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 567315 + ... + 569308.

It is an arithmetic number, because the mean of its divisors is an integer number (283587688).

Almost surely, 2^1133213131 is an apocalyptic number.

1133213131 is a deficient number, since it is larger than the sum of its proper divisors (1137621).

1133213131 is an equidigital number, since it uses as much as digits as its factorization.

1133213131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137620.

The product of its digits is 162, while the sum is 19.

The square root of 1133213131 is about 33663.2311431924. The cubic root of 1133213131 is about 1042.5667403363.

Adding to 1133213131 its reverse (1313123311), we get a palindrome (2446336442).

The spelling of 1133213131 in words is "one billion, one hundred thirty-three million, two hundred thirteen thousand, one hundred thirty-one".