1201395313 has 2 divisors, whose sum is σ = 1201395314. Its totient is φ = 1201395312.

The previous prime is 1201395311. The next prime is 1201395319. The reversal of 1201395313 is 3135931021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 664453729 + 536941584 = 25777^2 + 23172^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201395313 - 2¹ = 1201395311 is a prime.

Together with 1201395311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1201395311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600697656 + 600697657.

It is an arithmetic number, because the mean of its divisors is an integer number (600697657).

Almost surely, 2^1201395313 is an apocalyptic number.

It is an amenable number.

1201395313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201395313 is an equidigital number, since it uses as much as digits as its factorization.

1201395313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430, while the sum is 28.

The square root of 1201395313 is about 34661.1499087956. The cubic root of 1201395313 is about 1063.0702822370.

The spelling of 1201395313 in words is "one billion, two hundred one million, three hundred ninety-five thousand, three hundred thirteen".