3012355981 has 2 divisors, whose sum is σ = 3012355982. Its totient is φ = 3012355980.

The previous prime is 3012355967. The next prime is 3012356041. The reversal of 3012355981 is 1895532103.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2980614025 + 31741956 = 54595^2 + 5634^2 .

It is an emirp because it is prime and its reverse (1895532103) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3012355981 - 2⁵ = 3012355949 is a prime.

It is a super-2 number, since 2×3012355981² = 18148577112532944722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3012355981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3012356981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1506177990 + 1506177991.

It is an arithmetic number, because the mean of its divisors is an integer number (1506177991).

Almost surely, 2^3012355981 is an apocalyptic number.

It is an amenable number.

3012355981 is a deficient number, since it is larger than the sum of its proper divisors (1).

3012355981 is an equidigital number, since it uses as much as digits as its factorization.

3012355981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 3012355981 is about 54884.9340074305. The cubic root of 3012355981 is about 1444.2269034977.

The spelling of 3012355981 in words is "three billion, twelve million, three hundred fifty-five thousand, nine hundred eighty-one".