31109226 has 8 divisors (see below), whose sum is σ = 62218464. Its totient is φ = 10369740.

The previous prime is 31109209. The next prime is 31109233. The reversal of 31109226 is 62290113.

It is a sphenic number, since it is the product of 3 distinct primes.

31109226 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 31109196 and 31109205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2592430 + ... + 2592441.

It is an arithmetic number, because the mean of its divisors is an integer number (7777308).

Almost surely, 2^31109226 is an apocalyptic number.

31109226 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31109226 is a wasteful number, since it uses less digits than its factorization.

31109226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5184876.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 31109226 is about 5577.5645222624. The cubic root of 31109226 is about 314.5065794804.

Adding to 31109226 its reverse (62290113), we get a palindrome (93399339).

The spelling of 31109226 in words is "thirty-one million, one hundred nine thousand, two hundred twenty-six".