23551431103111 has 8 divisors (see below), whose sum is σ = 25407315242064. Its totient is φ = 21747825390720.

The previous prime is 23551431103093. The next prime is 23551431103133. The reversal of 23551431103111 is 11130113415532.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23551431103111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23551431103141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13069605705 + ... + 13069607506.

It is an arithmetic number, because the mean of its divisors is an integer number (3175914405258).

Almost surely, 2^{23551431103111} is an apocalyptic number.

23551431103111 is a deficient number, since it is larger than the sum of its proper divisors (1855884138953).

23551431103111 is a wasteful number, since it uses less digits than its factorization.

23551431103111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26139213281.

The product of its (nonzero) digits is 5400, while the sum is 31.

Adding to 23551431103111 its reverse (11130113415532), we get a palindrome (34681544518643).

The spelling of 23551431103111 in words is "twenty-three trillion, five hundred fifty-one billion, four hundred thirty-one million, one hundred three thousand, one hundred eleven".