31424022 has 24 divisors (see below), whose sum is σ = 77812176. Its totient is φ = 8978256.

The previous prime is 31424009. The next prime is 31424033. The reversal of 31424022 is 22042413.

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 = 31423986 and 31424004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124573 + ... + 124824.

It is an arithmetic number, because the mean of its divisors is an integer number (3242174).

Almost surely, 2^31424022 is an apocalyptic number.

31424022 is an abundant number, since it is smaller than the sum of its proper divisors (46388154).

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

31424022 is a wasteful number, since it uses less digits than its factorization.

31424022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249412 (or 249409 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 31424022 is about 5605.7133355176. The cubic root of 31424022 is about 315.5638578032.

Adding to 31424022 its reverse (22042413), we get a palindrome (53466435).

It can be divided in two parts, 314 and 24022, that added together give a square (24336 = 156²).

The spelling of 31424022 in words is "thirty-one million, four hundred twenty-four thousand, twenty-two".