31019112 has 40 divisors (see below), whose sum is σ = 86884050. Its totient is φ = 10339488.

The previous prime is 31019099. The next prime is 31019117. The reversal of 31019112 is 21191013.

It can be written as a sum of positive squares in only one way, i.e., 22410756 + 8608356 = 4734^2 + 2934^2 .

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

It is not an unprimeable number, because it can be changed into a prime (31019117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 23287 + ... + 24582.

Almost surely, 2^31019112 is an apocalyptic number.

It is an amenable number.

31019112 is an abundant number, since it is smaller than the sum of its proper divisors (55864938).

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

31019112 is a wasteful number, since it uses less digits than its factorization.

31019112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47887 (or 47874 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

The square root of 31019112 is about 5569.4804066448. The cubic root of 31019112 is about 314.2026090382.

The spelling of 31019112 in words is "thirty-one million, nineteen thousand, one hundred twelve".