31220122 has 8 divisors (see below), whose sum is σ = 46879200. Its totient is φ = 15593724.

The previous prime is 31220093. The next prime is 31220159. The reversal of 31220122 is 22102213.

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

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, 5622 + ... + 9697.

It is an arithmetic number, because the mean of its divisors is an integer number (5859900).

Almost surely, 2^31220122 is an apocalyptic number.

31220122 is a deficient number, since it is larger than the sum of its proper divisors (15659078).

31220122 is a wasteful number, since it uses less digits than its factorization.

31220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16340.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 31220122 is about 5587.4969351222. The cubic root of 31220122 is about 314.8798466749.

Adding to 31220122 its reverse (22102213), we get a palindrome (53322335).

The spelling of 31220122 in words is "thirty-one million, two hundred twenty thousand, one hundred twenty-two".