1211023323 has 12 divisors (see below), whose sum is σ = 1750165560. Its totient is φ = 806929056.

The previous prime is 1211023279. The next prime is 1211023351. The reversal of 1211023323 is 3233201121.

It is not a de Polignac number, because 1211023323 - 2⁶ = 1211023259 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1211023296 and 1211023305.

It is not an unprimeable number, because it can be changed into a prime (1211023223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16186 + ... + 51807.

It is an arithmetic number, because the mean of its divisors is an integer number (145847130).

Almost surely, 2^1211023323 is an apocalyptic number.

1211023323 is a deficient number, since it is larger than the sum of its proper divisors (539142237).

1211023323 is a wasteful number, since it uses less digits than its factorization.

1211023323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69978 (or 69975 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1211023323 is about 34799.7603871061. The cubic root of 1211023323 is about 1065.9025530242.

Adding to 1211023323 its reverse (3233201121), we get a palindrome (4444224444).

It can be divided in two parts, 1211023 and 323, that added together give a triangular number (1211346 = T₁₅₅₆).

The spelling of 1211023323 in words is "one billion, two hundred eleven million, twenty-three thousand, three hundred twenty-three".