31224641 has 8 divisors (see below), whose sum is σ = 35780160. Its totient is φ = 26692848.

The previous prime is 31224623. The next prime is 31224647. The reversal of 31224641 is 14642213.

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

It is not a de Polignac number, because 31224641 - 2¹⁰ = 31223617 is a prime.

It is a super-3 number, since 3×31224641³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31224647) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3011 + ... + 8456.

It is an arithmetic number, because the mean of its divisors is an integer number (4472520).

Almost surely, 2^31224641 is an apocalyptic number.

It is an amenable number.

31224641 is a deficient number, since it is larger than the sum of its proper divisors (4555519).

31224641 is a wasteful number, since it uses less digits than its factorization.

31224641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11863.

The product of its digits is 1152, while the sum is 23.

The square root of 31224641 is about 5587.9013054992. The cubic root of 31224641 is about 314.8950385157.

Adding to 31224641 its reverse (14642213), we get a palindrome (45866854).

The spelling of 31224641 in words is "thirty-one million, two hundred twenty-four thousand, six hundred forty-one".