31324122 has 24 divisors (see below), whose sum is σ = 71441760. Its totient is φ = 9891720.

The previous prime is 31324109. The next prime is 31324127. The reversal of 31324122 is 22142313.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 31324095 and 31324104.

It is not an unprimeable number, because it can be changed into a prime (31324127) 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 11 ways as a sum of consecutive naturals, for example, 45454 + ... + 46137.

It is an arithmetic number, because the mean of its divisors is an integer number (2976740).

Almost surely, 2^31324122 is an apocalyptic number.

31324122 is an abundant number, since it is smaller than the sum of its proper divisors (40117638).

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

31324122 is a wasteful number, since it uses less digits than its factorization.

31324122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91618 (or 91615 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 31324122 is about 5596.7956903929. The cubic root of 31324122 is about 315.2291001524.

Adding to 31324122 its reverse (22142313), we get a palindrome (53466435).

The spelling of 31324122 in words is "thirty-one million, three hundred twenty-four thousand, one hundred twenty-two".