23135901181 has 4 divisors (see below), whose sum is σ = 24141809952. Its totient is φ = 22129992412.

The previous prime is 23135901179. The next prime is 23135901197. The reversal of 23135901181 is 18110953132.

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 not a de Polignac number, because 23135901181 - 2¹ = 23135901179 is a prime.

It is a super-2 number, since 2×23135901181² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23135901281) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 502954351 + ... + 502954396.

It is an arithmetic number, because the mean of its divisors is an integer number (6035452488).

Almost surely, 2^23135901181 is an apocalyptic number.

It is an amenable number.

23135901181 is a deficient number, since it is larger than the sum of its proper divisors (1005908771).

23135901181 is a wasteful number, since it uses less digits than its factorization.

23135901181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005908770.

The product of its (nonzero) digits is 6480, while the sum is 34.

The spelling of 23135901181 in words is "twenty-three billion, one hundred thirty-five million, nine hundred one thousand, one hundred eighty-one".