31227012 has 24 divisors (see below), whose sum is σ = 80959200. Its totient is φ = 10408968.

The previous prime is 31226999. The next prime is 31227029. The reversal of 31227012 is 21072213.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 7 ways as a sum of consecutive naturals, for example, 144462 + ... + 144677.

It is an arithmetic number, because the mean of its divisors is an integer number (3373300).

Almost surely, 2^31227012 is an apocalyptic number.

It is an amenable number.

31227012 is an abundant number, since it is smaller than the sum of its proper divisors (49732188).

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

31227012 is a wasteful number, since it uses less digits than its factorization.

31227012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289152 (or 289144 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 31227012 is about 5588.1134562570. The cubic root of 31227012 is about 314.9030086873.

Adding to 31227012 its reverse (21072213), we get a palindrome (52299225).

The spelling of 31227012 in words is "thirty-one million, two hundred twenty-seven thousand, twelve".