31222396 has 24 divisors (see below), whose sum is σ = 58058000. Its totient is φ = 14649984.

The previous prime is 31222393. The next prime is 31222427. The reversal of 31222396 is 69322213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31222391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6400 + ... + 10168.

Almost surely, 2^31222396 is an apocalyptic number.

It is an amenable number.

31222396 is a deficient number, since it is larger than the sum of its proper divisors (26835604).

31222396 is a wasteful number, since it uses less digits than its factorization.

31222396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3901 (or 3899 counting only the distinct ones).

The product of its digits is 3888, while the sum is 28.

The square root of 31222396 is about 5587.7004214614. The cubic root of 31222396 is about 314.8874915242.

The spelling of 31222396 in words is "thirty-one million, two hundred twenty-two thousand, three hundred ninety-six".