20115304233 has 8 divisors (see below), whose sum is σ = 26821083168. Its totient is φ = 13409864064.

The previous prime is 20115304217. The next prime is 20115304309. The reversal of 20115304233 is 33240351102.

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

It is not a de Polignac number, because 20115304233 - 2⁴ = 20115304217 is a prime.

It is a super-2 number, since 2×20115304233² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20115304633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136066 + ... + 242372.

It is an arithmetic number, because the mean of its divisors is an integer number (3352635396).

Almost surely, 2^20115304233 is an apocalyptic number.

It is an amenable number.

20115304233 is a deficient number, since it is larger than the sum of its proper divisors (6705778935).

20115304233 is a wasteful number, since it uses less digits than its factorization.

20115304233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169383.

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 20115304233 its reverse (33240351102), we get a palindrome (53355655335).

The spelling of 20115304233 in words is "twenty billion, one hundred fifteen million, three hundred four thousand, two hundred thirty-three".