20122323231 has 8 divisors (see below), whose sum is σ = 27695240704. Its totient is φ = 12982143960.

The previous prime is 20122323229. The next prime is 20122323233. The reversal of 20122323231 is 13232322102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20122323229) and next prime (20122323233).

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

It is not a de Polignac number, because 20122323231 - 2¹ = 20122323229 is a prime.

It is a super-2 number, since 2×20122323231² (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 = 20122323198 and 20122323207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122323233) 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, 108184441 + ... + 108184626.

It is an arithmetic number, because the mean of its divisors is an integer number (3461905088).

Almost surely, 2^20122323231 is an apocalyptic number.

20122323231 is a deficient number, since it is larger than the sum of its proper divisors (7572917473).

20122323231 is a wasteful number, since it uses less digits than its factorization.

20122323231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216369101.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20122323231 its reverse (13232322102), we get a palindrome (33354645333).

The spelling of 20122323231 in words is "twenty billion, one hundred twenty-two million, three hundred twenty-three thousand, two hundred thirty-one".