1133220031 has 4 divisors (see below), whose sum is σ = 1136308192. Its totient is φ = 1130131872.

The previous prime is 1133219993. The next prime is 1133220041. The reversal of 1133220031 is 1300223311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1300223311 = 503 ⋅2584937.

It is a cyclic number.

It is not a de Polignac number, because 1133220031 - 2²¹ = 1131122879 is a prime.

It is a super-2 number, since 2×1133220031² = 2568375277319281922, 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 = 1133219987 and 1133220014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1133220041) 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, 1543530 + ... + 1544263.

It is an arithmetic number, because the mean of its divisors is an integer number (284077048).

Almost surely, 2^1133220031 is an apocalyptic number.

1133220031 is a deficient number, since it is larger than the sum of its proper divisors (3088161).

1133220031 is an equidigital number, since it uses as much as digits as its factorization.

1133220031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3088160.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1133220031 is about 33663.3336287421. Note that the first 3 decimals coincide. The cubic root of 1133220031 is about 1042.5688563537.

Adding to 1133220031 its reverse (1300223311), we get a palindrome (2433443342).

The spelling of 1133220031 in words is "one billion, one hundred thirty-three million, two hundred twenty thousand, thirty-one".