20102233231 has 4 divisors (see below), whose sum is σ = 20103608200. Its totient is φ = 20100858264.

The previous prime is 20102233201. The next prime is 20102233259. The reversal of 20102233231 is 13233220102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20102233231 - 2⁵ = 20102233199 is a prime.

It is a super-2 number, since 2×20102233231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20102233199 and 20102233208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102233201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 665316 + ... + 694873.

It is an arithmetic number, because the mean of its divisors is an integer number (5025902050).

Almost surely, 2^20102233231 is an apocalyptic number.

20102233231 is a deficient number, since it is larger than the sum of its proper divisors (1374969).

20102233231 is a wasteful number, since it uses less digits than its factorization.

20102233231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374968.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20102233231 its reverse (13233220102), we get a palindrome (33335453333).

The spelling of 20102233231 in words is "twenty billion, one hundred two million, two hundred thirty-three thousand, two hundred thirty-one".