1223231011 has 8 divisors (see below), whose sum is σ = 1298050560. Its totient is φ = 1150214472.

The previous prime is 1223230999. The next prime is 1223231021. The reversal of 1223231011 is 1101323221.

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

It is a cyclic number.

It is not a de Polignac number, because 1223231011 - 2¹⁵ = 1223198243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223231021) 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, 449355 + ... + 452068.

It is an arithmetic number, because the mean of its divisors is an integer number (162256320).

Almost surely, 2^1223231011 is an apocalyptic number.

1223231011 is a deficient number, since it is larger than the sum of its proper divisors (74819549).

1223231011 is an equidigital number, since it uses as much as digits as its factorization.

1223231011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901505.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1223231011 is about 34974.7195985901. The cubic root of 1223231011 is about 1069.4721858912.

Adding to 1223231011 its reverse (1101323221), we get a palindrome (2324554232).

The spelling of 1223231011 in words is "one billion, two hundred twenty-three million, two hundred thirty-one thousand, eleven".