1201300181 has 2 divisors, whose sum is σ = 1201300182. Its totient is φ = 1201300180.

The previous prime is 1201300169. The next prime is 1201300187. The reversal of 1201300181 is 1810031021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 976000081 + 225300100 = 31241^2 + 15010^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201300181 - 2¹⁰ = 1201299157 is a prime.

It is a super-2 number, since 2×1201300181² = 2886244249741265522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201300187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600650090 + 600650091.

It is an arithmetic number, because the mean of its divisors is an integer number (600650091).

Almost surely, 2^1201300181 is an apocalyptic number.

It is an amenable number.

1201300181 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201300181 is an equidigital number, since it uses as much as digits as its factorization.

1201300181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 1201300181 is about 34659.7775670878. Note that the first 3 decimals coincide. The cubic root of 1201300181 is about 1063.0422219002.

The spelling of 1201300181 in words is "one billion, two hundred one million, three hundred thousand, one hundred eighty-one".