1223203112231 has 4 divisors (see below), whose sum is σ = 1226610363600. Its totient is φ = 1219795860864.

The previous prime is 1223203112107. The next prime is 1223203112237. The reversal of 1223203112231 is 1322113023221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1223203112231 - 2²⁶ = 1223136003367 is a prime.

It is a super-2 number, since 2×1223203112231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1223203112197 and 1223203112206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223203112237) 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 3 ways as a sum of consecutive naturals, for example, 1703625146 + ... + 1703625863.

It is an arithmetic number, because the mean of its divisors is an integer number (306652590900).

Almost surely, 2^{1223203112231} is an apocalyptic number.

1223203112231 is a deficient number, since it is larger than the sum of its proper divisors (3407251369).

1223203112231 is an equidigital number, since it uses as much as digits as its factorization.

1223203112231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3407251368.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1223203112231 its reverse (1322113023221), we get a palindrome (2545316135452).

The spelling of 1223203112231 in words is "one trillion, two hundred twenty-three billion, two hundred three million, one hundred twelve thousand, two hundred thirty-one".