31123413222 has 16 divisors (see below), whose sum is σ = 67905628992. Its totient is φ = 9431337320.

The previous prime is 31123413151. The next prime is 31123413227. The reversal of 31123413222 is 22231432113.

It is a junction number, because it is equal to n+sod(n) for n = 31123413192 and 31123413201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31123413227) 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, 235783368 + ... + 235783499.

It is an arithmetic number, because the mean of its divisors is an integer number (4244101812).

Almost surely, 2^31123413222 is an apocalyptic number.

31123413222 is an abundant number, since it is smaller than the sum of its proper divisors (36782215770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31123413222 is a wasteful number, since it uses less digits than its factorization.

31123413222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471566883.

The product of its digits is 1728, while the sum is 24.

Adding to 31123413222 its reverse (22231432113), we get a palindrome (53354845335).

The spelling of 31123413222 in words is "thirty-one billion, one hundred twenty-three million, four hundred thirteen thousand, two hundred twenty-two".