1211011323 has 8 divisors (see below), whose sum is σ = 1614954048. Its totient is φ = 807204744.

The previous prime is 1211011283. The next prime is 1211011339. The reversal of 1211011323 is 3231101121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1211011323 - 2¹⁶ = 1210945787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1211011423) 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, 11065 + ... + 50442.

It is an arithmetic number, because the mean of its divisors is an integer number (201869256).

Almost surely, 2^1211011323 is an apocalyptic number.

1211011323 is a deficient number, since it is larger than the sum of its proper divisors (403942725).

1211011323 is an equidigital number, since it uses as much as digits as its factorization.

1211011323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68073.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1211011323 is about 34799.5879716987. The cubic root of 1211011323 is about 1065.8990323452.

Adding to 1211011323 its reverse (3231101121), we get a palindrome (4442112444).

The spelling of 1211011323 in words is "one billion, two hundred eleven million, eleven thousand, three hundred twenty-three".