612201313 has 8 divisors (see below), whose sum is σ = 614689128. Its totient is φ = 609719424.

The previous prime is 612201283. The next prime is 612201329. The reversal of 612201313 is 313102216.

It can be written as a sum of positive squares in 4 ways, for example, as 54863649 + 557337664 = 7407^2 + 23608^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 612201313 - 2¹³ = 612193121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (612201613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 352395 + ... + 354127.

It is an arithmetic number, because the mean of its divisors is an integer number (76836141).

Almost surely, 2^612201313 is an apocalyptic number.

It is an amenable number.

612201313 is a deficient number, since it is larger than the sum of its proper divisors (2487815).

612201313 is a wasteful number, since it uses less digits than its factorization.

612201313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2963.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 612201313 is about 24742.7022170174. The cubic root of 612201313 is about 849.1115575131. Note that the first 3 decimals are identical.

Adding to 612201313 its reverse (313102216), we get a palindrome (925303529).

The spelling of 612201313 in words is "six hundred twelve million, two hundred one thousand, three hundred thirteen".