1123031331 has 8 divisors (see below), whose sum is σ = 1663750160. Its totient is φ = 748687536.

The previous prime is 1123031323. The next prime is 1123031443. The reversal of 1123031331 is 1331303211.

It is a happy number.

It is not a de Polignac number, because 1123031331 - 2³ = 1123031323 is a prime.

It is a super-2 number, since 2×1123031331² = 2522398740815263122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123030331) 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, 20796850 + ... + 20796903.

It is an arithmetic number, because the mean of its divisors is an integer number (207968770).

Almost surely, 2^1123031331 is an apocalyptic number.

1123031331 is a deficient number, since it is larger than the sum of its proper divisors (540718829).

1123031331 is an equidigital number, since it uses as much as digits as its factorization.

1123031331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41593762 (or 41593756 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 1123031331 is about 33511.6596276580. The cubic root of 1123031331 is about 1039.4348911534.

Adding to 1123031331 its reverse (1331303211), we get a palindrome (2454334542).

The spelling of 1123031331 in words is "one billion, one hundred twenty-three million, thirty-one thousand, three hundred thirty-one".