20102020231 has 16 divisors (see below), whose sum is σ = 20371253760. Its totient is φ = 19835223520.

The previous prime is 20102020207. The next prime is 20102020241. The reversal of 20102020231 is 13202020102.

It is a cyclic number.

It is not a de Polignac number, because 20102020231 - 2¹³ = 20102012039 is a prime.

It is a super-2 number, since 2×20102020231² (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 (20102020241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14640261 + ... + 14641633.

It is an arithmetic number, because the mean of its divisors is an integer number (1273203360).

Almost surely, 2^20102020231 is an apocalyptic number.

20102020231 is a deficient number, since it is larger than the sum of its proper divisors (269233529).

20102020231 is a wasteful number, since it uses less digits than its factorization.

20102020231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 20102020231 its reverse (13202020102), we get a palindrome (33304040333).

The spelling of 20102020231 in words is "twenty billion, one hundred two million, twenty thousand, two hundred thirty-one".