23431431223535 has 16 divisors (see below), whose sum is σ = 28280120827392. Its totient is φ = 18636981561600.

The previous prime is 23431431223523. The next prime is 23431431223537. The reversal of 23431431223535 is 53532213413432.

It is a de Polignac number, because none of the positive numbers 2^k-23431431223535 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23431431223492 and 23431431223501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23431431223537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4814774 + ... + 8369283.

It is an arithmetic number, because the mean of its divisors is an integer number (1767507551712).

Almost surely, 2^{23431431223535} is an apocalyptic number.

23431431223535 is a deficient number, since it is larger than the sum of its proper divisors (4848689603857).

23431431223535 is a wasteful number, since it uses less digits than its factorization.

23431431223535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13186114.

The product of its digits is 777600, while the sum is 41.

Adding to 23431431223535 its reverse (53532213413432), we get a palindrome (76963644636967).

The spelling of 23431431223535 in words is "twenty-three trillion, four hundred thirty-one billion, four hundred thirty-one million, two hundred twenty-three thousand, five hundred thirty-five".