3121012 has 6 divisors (see below), whose sum is σ = 5461778. Its totient is φ = 1560504.

The previous prime is 3121007. The next prime is 3121033. The reversal of 3121012 is 2101213.

It can be written as a sum of positive squares in only one way, i.e., 2835856 + 285156 = 1684^2 + 534^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3121012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 390123 + ... + 390130.

Almost surely, 2^3121012 is an apocalyptic number.

It is an amenable number.

3121012 is a deficient number, since it is larger than the sum of its proper divisors (2340766).

3121012 is a wasteful number, since it uses less digits than its factorization.

3121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780257 (or 780255 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 3121012 is about 1766.6386161295. The cubic root of 3121012 is about 146.1386685283.

Adding to 3121012 its reverse (2101213), we get a palindrome (5222225).

The spelling of 3121012 in words is "three million, one hundred twenty-one thousand, twelve".