31232268 has 18 divisors (see below), whose sum is σ = 78948324. Its totient is φ = 10410744.

The previous prime is 31232263. The next prime is 31232269. The reversal of 31232268 is 86223213.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (31232263) 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 5 ways as a sum of consecutive naturals, for example, 433746 + ... + 433817.

It is an arithmetic number, because the mean of its divisors is an integer number (4386018).

Almost surely, 2^31232268 is an apocalyptic number.

It is an amenable number.

31232268 is an abundant number, since it is smaller than the sum of its proper divisors (47716056).

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

31232268 is a wasteful number, since it uses less digits than its factorization.

31232268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867573 (or 867568 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 31232268 is about 5588.5837204072. The cubic root of 31232268 is about 314.9206754151.

The spelling of 31232268 in words is "thirty-one million, two hundred thirty-two thousand, two hundred sixty-eight".