23215513134043 has 16 divisors (see below), whose sum is σ = 24256383004672. Its totient is φ = 22194536220000.

The previous prime is 23215513134031. The next prime is 23215513134119. The reversal of 23215513134043 is 34043131551232.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 23215513134043 - 2¹⁷ = 23215513002971 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23215513133993 and 23215513134011.

It is not an unprimeable number, because it can be changed into a prime (23215516134043) 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, 12853071 + ... + 14547592.

It is an arithmetic number, because the mean of its divisors is an integer number (1516023937792).

Almost surely, 2^{23215513134043} is an apocalyptic number.

23215513134043 is a deficient number, since it is larger than the sum of its proper divisors (1040869870629).

23215513134043 is a wasteful number, since it uses less digits than its factorization.

23215513134043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27401026.

The product of its (nonzero) digits is 129600, while the sum is 37.

Adding to 23215513134043 its reverse (34043131551232), we get a palindrome (57258644685275).

The spelling of 23215513134043 in words is "twenty-three trillion, two hundred fifteen billion, five hundred thirteen million, one hundred thirty-four thousand, forty-three".