1133213123 has 16 divisors (see below), whose sum is σ = 1305870336. Its totient is φ = 963281760.

The previous prime is 1133213117. The next prime is 1133213239. The reversal of 1133213123 is 3213123311.

It is a de Polignac number, because none of the positive numbers 2^k-1133213123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1133213095 and 1133213104.

It is not an unprimeable number, because it can be changed into a prime (1133213113) 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, 510965 + ... + 513177.

It is an arithmetic number, because the mean of its divisors is an integer number (81616896).

Almost surely, 2^1133213123 is an apocalyptic number.

1133213123 is a deficient number, since it is larger than the sum of its proper divisors (172657213).

1133213123 is a wasteful number, since it uses less digits than its factorization.

1133213123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2794.

The product of its digits is 324, while the sum is 20.

The square root of 1133213123 is about 33663.2310243684. The cubic root of 1133213123 is about 1042.5667378830.

Adding to 1133213123 its reverse (3213123311), we get a palindrome (4346336434).

The spelling of 1133213123 in words is "one billion, one hundred thirty-three million, two hundred thirteen thousand, one hundred twenty-three".