31244112 has 30 divisors (see below), whose sum is σ = 87440522. Its totient is φ = 10414656.

The previous prime is 31244077. The next prime is 31244117. The reversal of 31244112 is 21144213.

It can be written as a sum of positive squares in only one way, i.e., 28132416 + 3111696 = 5304^2 + 1764^2 .

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31244117) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 108343 + ... + 108630.

Almost surely, 2^31244112 is an apocalyptic number.

It is an amenable number.

31244112 is an abundant number, since it is smaller than the sum of its proper divisors (56196410).

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

31244112 is a wasteful number, since it uses less digits than its factorization.

31244112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216987 (or 216978 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 31244112 is about 5589.6432802103. The cubic root of 31244112 is about 314.9604787908.

Adding to 31244112 its reverse (21144213), we get a palindrome (52388325).

The spelling of 31244112 in words is "thirty-one million, two hundred forty-four thousand, one hundred twelve".