1121311323 has 32 divisors (see below), whose sum is σ = 1870694400. Its totient is φ = 657655200.

The previous prime is 1121311319. The next prime is 1121311327. The reversal of 1121311323 is 3231131211.

1121311323 is a `hidden beast` number, since 11 + 21 + 311 + 323 = 666.

It is an interprime number because it is at equal distance from previous prime (1121311319) and next prime (1121311327).

It is not a de Polignac number, because 1121311323 - 2² = 1121311319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121311296 and 1121311305.

It is not an unprimeable number, because it can be changed into a prime (1121311327) 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 31 ways as a sum of consecutive naturals, for example, 51688 + ... + 70101.

It is an arithmetic number, because the mean of its divisors is an integer number (58459200).

Almost surely, 2^1121311323 is an apocalyptic number.

1121311323 is a deficient number, since it is larger than the sum of its proper divisors (749383077).

1121311323 is a wasteful number, since it uses less digits than its factorization.

1121311323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121840 (or 121834 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 1121311323 is about 33485.9869646991. The cubic root of 1121311323 is about 1038.9039621128.

Adding to 1121311323 its reverse (3231131211), we get a palindrome (4352442534).

The spelling of 1121311323 in words is "one billion, one hundred twenty-one million, three hundred eleven thousand, three hundred twenty-three".