31031412 has 12 divisors (see below), whose sum is σ = 72406656. Its totient is φ = 10343800.

The previous prime is 31031369. The next prime is 31031431. The reversal of 31031412 is 21413013.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 31031391 and 31031400.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1292964 + ... + 1292987.

It is an arithmetic number, because the mean of its divisors is an integer number (6033888).

Almost surely, 2^31031412 is an apocalyptic number.

It is an amenable number.

31031412 is an abundant number, since it is smaller than the sum of its proper divisors (41375244).

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

31031412 is a wasteful number, since it uses less digits than its factorization.

31031412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2585958 (or 2585956 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 31031412 is about 5570.5845294726. The cubic root of 31031412 is about 314.2441337749.

Adding to 31031412 its reverse (21413013), we get a palindrome (52444425).

The spelling of 31031412 in words is "thirty-one million, thirty-one thousand, four hundred twelve".