23105431535 has 16 divisors (see below), whose sum is σ = 27839179872. Its totient is φ = 18409305600.

The previous prime is 23105431513. The next prime is 23105431541. The reversal of 23105431535 is 53513450132.

It is not a de Polignac number, because 23105431535 - 2¹⁰ = 23105430511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4677587 + ... + 4682523.

It is an arithmetic number, because the mean of its divisors is an integer number (1739948742).

Almost surely, 2^23105431535 is an apocalyptic number.

23105431535 is a deficient number, since it is larger than the sum of its proper divisors (4733748337).

23105431535 is a wasteful number, since it uses less digits than its factorization.

23105431535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8554.

The product of its (nonzero) digits is 27000, while the sum is 32.

Adding to 23105431535 its reverse (53513450132), we get a palindrome (76618881667).

The spelling of 23105431535 in words is "twenty-three billion, one hundred five million, four hundred thirty-one thousand, five hundred thirty-five".