1201030981 has 2 divisors, whose sum is σ = 1201030982. Its totient is φ = 1201030980.

The previous prime is 1201030973. The next prime is 1201031053. The reversal of 1201030981 is 1890301021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 834921025 + 366109956 = 28895^2 + 19134^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201030981 - 2³ = 1201030973 is a prime.

It is a super-2 number, since 2×1201030981² = 2884950834643644722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201030081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600515490 + 600515491.

It is an arithmetic number, because the mean of its divisors is an integer number (600515491).

Almost surely, 2^1201030981 is an apocalyptic number.

It is an amenable number.

1201030981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201030981 is an equidigital number, since it uses as much as digits as its factorization.

1201030981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 1201030981 is about 34655.8938854562. The cubic root of 1201030981 is about 1062.9628100681.

The spelling of 1201030981 in words is "one billion, two hundred one million, thirty thousand, nine hundred eighty-one".