31004112 has 40 divisors (see below), whose sum is σ = 80345056. Its totient is φ = 10302336.

The previous prime is 31004111. The next prime is 31004119. The reversal of 31004112 is 21140013.

It is a happy number.

It is a super-2 number, since 2×31004112² = 1922509921817088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31004111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18243 + ... + 19869.

Almost surely, 2^31004112 is an apocalyptic number.

It is an amenable number.

31004112 is an abundant number, since it is smaller than the sum of its proper divisors (49340944).

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

31004112 is a wasteful number, since it uses less digits than its factorization.

31004112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2035 (or 2029 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 31004112 is about 5568.1336190864. The cubic root of 31004112 is about 314.1519542565.

Adding to 31004112 its reverse (21140013), we get a palindrome (52144125).

The spelling of 31004112 in words is "thirty-one million, four thousand, one hundred twelve".