31061012 has 12 divisors (see below), whose sum is σ = 54395796. Its totient is φ = 15519360.

The previous prime is 31061003. The next prime is 31061047. The reversal of 31061012 is 21016013.

It can be written as a sum of positive squares in 2 ways, for example, as 10666756 + 20394256 = 3266^2 + 4516^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9548 + ... + 12380.

It is an arithmetic number, because the mean of its divisors is an integer number (4532983).

Almost surely, 2^31061012 is an apocalyptic number.

It is an amenable number.

31061012 is a deficient number, since it is larger than the sum of its proper divisors (23334784).

31061012 is a wasteful number, since it uses less digits than its factorization.

31061012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5578 (or 5576 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 31061012 is about 5573.2407089592. The cubic root of 31061012 is about 314.3440182662.

Adding to 31061012 its reverse (21016013), we get a palindrome (52077025).

The spelling of 31061012 in words is "thirty-one million, sixty-one thousand, twelve".