1223101311 has 8 divisors (see below), whose sum is σ = 1683408384. Its totient is φ = 789097560.

The previous prime is 1223101277. The next prime is 1223101333. The reversal of 1223101311 is 1131013221.

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 1223101311 - 2¹⁰ = 1223100287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223101391) 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, 6575721 + ... + 6575906.

It is an arithmetic number, because the mean of its divisors is an integer number (210426048).

Almost surely, 2^1223101311 is an apocalyptic number.

1223101311 is a deficient number, since it is larger than the sum of its proper divisors (460307073).

1223101311 is a wasteful number, since it uses less digits than its factorization.

1223101311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13151661.

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

The square root of 1223101311 is about 34972.8653530133. The cubic root of 1223101311 is about 1069.4343856054.

Adding to 1223101311 its reverse (1131013221), we get a palindrome (2354114532).

The spelling of 1223101311 in words is "one billion, two hundred twenty-three million, one hundred one thousand, three hundred eleven".