31228468 has 12 divisors (see below), whose sum is σ = 54698112. Its totient is φ = 15600440.

The previous prime is 31228459. The next prime is 31228469. The reversal of 31228468 is 86482213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31228469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2973 + ... + 8443.

It is an arithmetic number, because the mean of its divisors is an integer number (4558176).

Almost surely, 2^31228468 is an apocalyptic number.

It is an amenable number.

31228468 is a deficient number, since it is larger than the sum of its proper divisors (23469644).

31228468 is a wasteful number, since it uses less digits than its factorization.

31228468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6902 (or 6900 counting only the distinct ones).

The product of its digits is 18432, while the sum is 34.

The square root of 31228468 is about 5588.2437312630. The cubic root of 31228468 is about 314.9079028652.

The spelling of 31228468 in words is "thirty-one million, two hundred twenty-eight thousand, four hundred sixty-eight".