20102000231 has 4 divisors (see below), whose sum is σ = 20113276272. Its totient is φ = 20090724192.

The previous prime is 20102000203. The next prime is 20102000279. The reversal of 20102000231 is 13200020102.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20102000231 is a prime.

It is a super-2 number, since 2×20102000231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102000201) 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, 5635346 + ... + 5638911.

It is an arithmetic number, because the mean of its divisors is an integer number (5028319068).

Almost surely, 2^20102000231 is an apocalyptic number.

20102000231 is a deficient number, since it is larger than the sum of its proper divisors (11276041).

20102000231 is a wasteful number, since it uses less digits than its factorization.

20102000231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11276040.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 20102000231 its reverse (13200020102), we get a palindrome (33302020333).

The spelling of 20102000231 in words is "twenty billion, one hundred two million, two hundred thirty-one", and thus it is an aban number.