1223131302231 has 16 divisors (see below), whose sum is σ = 1674950949888. Its totient is φ = 793367114400.

The previous prime is 1223131302181. The next prime is 1223131302233. The reversal of 1223131302231 is 1322031313221.

It is not a de Polignac number, because 1223131302231 - 2²² = 1223127107927 is a prime.

It is a super-2 number, since 2×1223131302231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223131302233) 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 15 ways as a sum of consecutive naturals, for example, 9704386 + ... + 9829616.

It is an arithmetic number, because the mean of its divisors is an integer number (104684434368).

Almost surely, 2^{1223131302231} is an apocalyptic number.

1223131302231 is a deficient number, since it is larger than the sum of its proper divisors (451819647657).

1223131302231 is a wasteful number, since it uses less digits than its factorization.

1223131302231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213262.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1223131302231 its reverse (1322031313221), we get a palindrome (2545162615452).

The spelling of 1223131302231 in words is "one trillion, two hundred twenty-three billion, one hundred thirty-one million, three hundred two thousand, two hundred thirty-one".