20302312233 has 32 divisors (see below), whose sum is σ = 31561067520. Its totient is φ = 11368491840.

The previous prime is 20302312223. The next prime is 20302312241. The reversal of 20302312233 is 33221320302.

It is not a de Polignac number, because 20302312233 - 2⁵ = 20302312201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (20302312223) 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 31 ways as a sum of consecutive naturals, for example, 366918 + ... + 418608.

It is an arithmetic number, because the mean of its divisors is an integer number (986283360).

Almost surely, 2^20302312233 is an apocalyptic number.

It is an amenable number.

20302312233 is a deficient number, since it is larger than the sum of its proper divisors (11258755287).

20302312233 is a wasteful number, since it uses less digits than its factorization.

20302312233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52077.

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 20302312233 its reverse (33221320302), we get a palindrome (53523632535).

The spelling of 20302312233 in words is "twenty billion, three hundred two million, three hundred twelve thousand, two hundred thirty-three".