20123322312031 has 16 divisors (see below), whose sum is σ = 21876203865600. Its totient is φ = 18448931780928.

The previous prime is 20123322312019. The next prime is 20123322312059. The reversal of 20123322312031 is 13021322332102.

It is not a de Polignac number, because 20123322312031 - 2³⁷ = 19985883358559 is a prime.

It is a super-2 number, since 2×20123322312031² (a number of 27 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 = 20123322311987 and 20123322312005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123322312001) 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, 126518925 + ... + 126677878.

It is an arithmetic number, because the mean of its divisors is an integer number (1367262741600).

Almost surely, 2^{20123322312031} is an apocalyptic number.

20123322312031 is a deficient number, since it is larger than the sum of its proper divisors (1752881553569).

20123322312031 is a wasteful number, since it uses less digits than its factorization.

20123322312031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253196958.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 20123322312031 its reverse (13021322332102), we get a palindrome (33144644644133).

The spelling of 20123322312031 in words is "twenty trillion, one hundred twenty-three billion, three hundred twenty-two million, three hundred twelve thousand, thirty-one".