20315235201 has 8 divisors (see below), whose sum is σ = 27089289024. Its totient is φ = 13542335760.

The previous prime is 20315235197. The next prime is 20315235211. The reversal of 20315235201 is 10253251302.

It is a happy number.

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

It is not a de Polignac number, because 20315235201 - 2² = 20315235197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20315235211) 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 7 ways as a sum of consecutive naturals, for example, 246661 + ... + 318546.

It is an arithmetic number, because the mean of its divisors is an integer number (3386161128).

Almost surely, 2^20315235201 is an apocalyptic number.

It is an amenable number.

20315235201 is a deficient number, since it is larger than the sum of its proper divisors (6774053823).

20315235201 is a wasteful number, since it uses less digits than its factorization.

20315235201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577191.

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 20315235201 its reverse (10253251302), we get a palindrome (30568486503).

The spelling of 20315235201 in words is "twenty billion, three hundred fifteen million, two hundred thirty-five thousand, two hundred one".