20101365231 has 4 divisors (see below), whose sum is σ = 26801820312. Its totient is φ = 13400910152.

The previous prime is 20101365181. The next prime is 20101365257. The reversal of 20101365231 is 13256310102.

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 20101365231 - 2¹⁵ = 20101332463 is a prime.

It is a super-2 number, since 2×20101365231² (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 (20101366231) 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, 3350227536 + ... + 3350227541.

It is an arithmetic number, because the mean of its divisors is an integer number (6700455078).

Almost surely, 2^20101365231 is an apocalyptic number.

20101365231 is a deficient number, since it is larger than the sum of its proper divisors (6700455081).

20101365231 is an equidigital number, since it uses as much as digits as its factorization.

20101365231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6700455080.

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 20101365231 its reverse (13256310102), we get a palindrome (33357675333).

The spelling of 20101365231 in words is "twenty billion, one hundred one million, three hundred sixty-five thousand, two hundred thirty-one".