20323513241 has 4 divisors (see below), whose sum is σ = 20338829952. Its totient is φ = 20308196532.

The previous prime is 20323513183. The next prime is 20323513271. The reversal of 20323513241 is 14231532302.

It is a happy number.

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-20323513241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20323513241.

It is not an unprimeable number, because it can be changed into a prime (20323513271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7656365 + ... + 7659018.

It is an arithmetic number, because the mean of its divisors is an integer number (5084707488).

Almost surely, 2^20323513241 is an apocalyptic number.

It is an amenable number.

20323513241 is a deficient number, since it is larger than the sum of its proper divisors (15316711).

20323513241 is a wasteful number, since it uses less digits than its factorization.

20323513241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15316710.

The product of its (nonzero) digits is 4320, while the sum is 26.

The spelling of 20323513241 in words is "twenty billion, three hundred twenty-three million, five hundred thirteen thousand, two hundred forty-one".