31228327 has 12 divisors (see below), whose sum is σ = 33994080. Its totient is φ = 28674048.

The previous prime is 31228313. The next prime is 31228361. The reversal of 31228327 is 72382213.

It is not a de Polignac number, because 31228327 - 2⁷ = 31228199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31228295 and 31228304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31228387) 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 11 ways as a sum of consecutive naturals, for example, 43074 + ... + 43792.

It is an arithmetic number, because the mean of its divisors is an integer number (2832840).

Almost surely, 2^31228327 is an apocalyptic number.

31228327 is a deficient number, since it is larger than the sum of its proper divisors (2765753).

31228327 is a wasteful number, since it uses less digits than its factorization.

31228327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002 (or 989 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 31228327 is about 5588.2311154783. The cubic root of 31228327 is about 314.9074289165.

It can be divided in two parts, 3122 and 8327, that added together give a square (11449 = 107²).

The spelling of 31228327 in words is "thirty-one million, two hundred twenty-eight thousand, three hundred twenty-seven".