1223231434231 has 4 divisors (see below), whose sum is σ = 1223372547000. Its totient is φ = 1223090321464.

The previous prime is 1223231434211. The next prime is 1223231434237. The reversal of 1223231434231 is 1324341323221.

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 1223231434231 - 2¹¹ = 1223231432183 is a prime.

It is a super-2 number, since 2×1223231434231² (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 = 1223231434193 and 1223231434202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223231434237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70543381 + ... + 70560718.

It is an arithmetic number, because the mean of its divisors is an integer number (305843136750).

Almost surely, 2^{1223231434231} is an apocalyptic number.

1223231434231 is a deficient number, since it is larger than the sum of its proper divisors (141112769).

1223231434231 is an equidigital number, since it uses as much as digits as its factorization.

1223231434231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141112768.

The product of its digits is 20736, while the sum is 31.

Adding to 1223231434231 its reverse (1324341323221), we get a palindrome (2547572757452).

The spelling of 1223231434231 in words is "one trillion, two hundred twenty-three billion, two hundred thirty-one million, four hundred thirty-four thousand, two hundred thirty-one".