13220123031 has 24 divisors (see below), whose sum is σ = 20109697920. Its totient is φ = 8345843856.

The previous prime is 13220123029. The next prime is 13220123041. The reversal of 13220123031 is 13032102231.

It is not a de Polignac number, because 13220123031 - 2¹ = 13220123029 is a prime.

It is a super-2 number, since 2×13220123031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13220122995 and 13220123013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220123041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 398380 + ... + 430286.

It is an arithmetic number, because the mean of its divisors is an integer number (837904080).

Almost surely, 2^13220123031 is an apocalyptic number.

13220123031 is a deficient number, since it is larger than the sum of its proper divisors (6889574889).

13220123031 is a wasteful number, since it uses less digits than its factorization.

13220123031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34355 (or 34352 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 13220123031 its reverse (13032102231), we get a palindrome (26252225262).

The spelling of 13220123031 in words is "thirteen billion, two hundred twenty million, one hundred twenty-three thousand, thirty-one".