1200397361 has 2 divisors, whose sum is σ = 1200397362. Its totient is φ = 1200397360.

The previous prime is 1200397279. The next prime is 1200397397. The reversal of 1200397361 is 1637930021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 896104225 + 304293136 = 29935^2 + 17444^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200397361 is a prime.

It is not a weakly prime, because it can be changed into another prime (1200697361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600198680 + 600198681.

It is an arithmetic number, because the mean of its divisors is an integer number (600198681).

Almost surely, 2^1200397361 is an apocalyptic number.

It is an amenable number.

1200397361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200397361 is an equidigital number, since it uses as much as digits as its factorization.

1200397361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 1200397361 is about 34646.7510886663. The cubic root of 1200397361 is about 1062.7758504249.

The spelling of 1200397361 in words is "one billion, two hundred million, three hundred ninety-seven thousand, three hundred sixty-one".