20633232313 has 8 divisors (see below), whose sum is σ = 20755963656. Its totient is φ = 20510851200.

The previous prime is 20633232307. The next prime is 20633232317. The reversal of 20633232313 is 31323233602.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2669995584 + 17963236729 = 51672^2 + 134027^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20633232313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20633232317) 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 7 ways as a sum of consecutive naturals, for example, 31095 + ... + 205507.

It is an arithmetic number, because the mean of its divisors is an integer number (2594495457).

Almost surely, 2^20633232313 is an apocalyptic number.

It is an amenable number.

20633232313 is a deficient number, since it is larger than the sum of its proper divisors (122731343).

20633232313 is a wasteful number, since it uses less digits than its factorization.

20633232313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175115.

The product of its (nonzero) digits is 11664, while the sum is 28.

Adding to 20633232313 its reverse (31323233602), we get a palindrome (51956465915).

The spelling of 20633232313 in words is "twenty billion, six hundred thirty-three million, two hundred thirty-two thousand, three hundred thirteen".