23520342133 has 4 divisors (see below), whose sum is σ = 24542965728. Its totient is φ = 22497718540.

The previous prime is 23520342127. The next prime is 23520342169. The reversal of 23520342133 is 33124302532.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23520342133 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 (23520342113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 511311763 + ... + 511311808.

It is an arithmetic number, because the mean of its divisors is an integer number (6135741432).

Almost surely, 2^23520342133 is an apocalyptic number.

23520342133 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

23520342133 is a deficient number, since it is larger than the sum of its proper divisors (1022623595).

23520342133 is a wasteful number, since it uses less digits than its factorization.

23520342133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022623594.

The product of its (nonzero) digits is 12960, while the sum is 28.

Adding to 23520342133 its reverse (33124302532), we get a palindrome (56644644665).

The spelling of 23520342133 in words is "twenty-three billion, five hundred twenty million, three hundred forty-two thousand, one hundred thirty-three".