23105431534 has 16 divisors (see below), whose sum is σ = 35148866688. Its totient is φ = 11390131512.

The previous prime is 23105431513. The next prime is 23105431541. The reversal of 23105431534 is 43513450132.

It is a junction number, because it is equal to n+sod(n) for n = 23105431496 and 23105431505.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 200292 + ... + 293815.

It is an arithmetic number, because the mean of its divisors is an integer number (2196804168).

Almost surely, 2^23105431534 is an apocalyptic number.

23105431534 is a deficient number, since it is larger than the sum of its proper divisors (12043435154).

23105431534 is a wasteful number, since it uses less digits than its factorization.

23105431534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494439.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 23105431534 its reverse (43513450132), we get a palindrome (66618881666).

The spelling of 23105431534 in words is "twenty-three billion, one hundred five million, four hundred thirty-one thousand, five hundred thirty-four".