1223030231311 has 24 divisors (see below), whose sum is σ = 1521312309936. Its totient is φ = 976877395200.

The previous prime is 1223030231251. The next prime is 1223030231323. The reversal of 1223030231311 is 1131320303221.

It is not a de Polignac number, because 1223030231311 - 2⁷ = 1223030231183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223030231341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7184301 + ... + 7352566.

It is an arithmetic number, because the mean of its divisors is an integer number (63388012914).

Almost surely, 2^{1223030231311} is an apocalyptic number.

1223030231311 is a deficient number, since it is larger than the sum of its proper divisors (298282078625).

1223030231311 is a wasteful number, since it uses less digits than its factorization.

1223030231311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14536999 (or 14536992 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1223030231311 its reverse (1131320303221), we get a palindrome (2354350534532).

The spelling of 1223030231311 in words is "one trillion, two hundred twenty-three billion, thirty million, two hundred thirty-one thousand, three hundred eleven".