1201316213 has 4 divisors (see below), whose sum is σ = 1242740940. Its totient is φ = 1159891488.

The previous prime is 1201316209. The next prime is 1201316219. The reversal of 1201316213 is 3126131021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3126131021 = 13 ⋅240471617.

It can be written as a sum of positive squares in 2 ways, for example, as 1028998084 + 172318129 = 32078^2 + 13127^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201316213 - 2² = 1201316209 is a prime.

It is a super-2 number, since 2×1201316213² = 2886321287233322738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201316219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20712320 + ... + 20712377.

It is an arithmetic number, because the mean of its divisors is an integer number (310685235).

Almost surely, 2^1201316213 is an apocalyptic number.

It is an amenable number.

1201316213 is a deficient number, since it is larger than the sum of its proper divisors (41424727).

1201316213 is an equidigital number, since it uses as much as digits as its factorization.

1201316213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41424726.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1201316213 is about 34660.0088430456. The cubic root of 1201316213 is about 1063.0469508367.

Adding to 1201316213 its reverse (3126131021), we get a palindrome (4327447234).

The spelling of 1201316213 in words is "one billion, two hundred one million, three hundred sixteen thousand, two hundred thirteen".