31010012 has 36 divisors (see below), whose sum is σ = 60480504. Its totient is φ = 13796640.

The previous prime is 31009999. The next prime is 31010017. The reversal of 31010012 is 21001013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31010017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 197438 + ... + 197594.

It is an arithmetic number, because the mean of its divisors is an integer number (1680014).

Almost surely, 2^31010012 is an apocalyptic number.

It is an amenable number.

31010012 is a deficient number, since it is larger than the sum of its proper divisors (29470492).

31010012 is a wasteful number, since it uses less digits than its factorization.

31010012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306 (or 237 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 31010012 is about 5568.6633943883. The cubic root of 31010012 is about 314.1718804195.

Adding to 31010012 its reverse (21001013), we get a palindrome (52011025).

The spelling of 31010012 in words is "thirty-one million, ten thousand, twelve".