20101020231 has 8 divisors (see below), whose sum is σ = 27178844544. Its totient is φ = 13211938040.

The previous prime is 20101020139. The next prime is 20101020257. The reversal of 20101020231 is 13202010102.

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

It is a cyclic number.

It is not a de Polignac number, because 20101020231 - 2¹¹ = 20101018183 is a prime.

It is a super-2 number, since 2×20101020231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101020271) 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, 47185281 + ... + 47185706.

It is an arithmetic number, because the mean of its divisors is an integer number (3397355568).

Almost surely, 2^20101020231 is an apocalyptic number.

20101020231 is a deficient number, since it is larger than the sum of its proper divisors (7077824313).

20101020231 is an equidigital number, since it uses as much as digits as its factorization.

20101020231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94371061.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20101020231 its reverse (13202010102), we get a palindrome (33303030333).

The spelling of 20101020231 in words is "twenty billion, one hundred one million, twenty thousand, two hundred thirty-one".