1201636313 has 8 divisors (see below), whose sum is σ = 1277648640. Its totient is φ = 1126216000.

The previous prime is 1201636307. The next prime is 1201636343. The reversal of 1201636313 is 3136361021.

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

It is not a de Polignac number, because 1201636313 - 2⁴ = 1201636297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201636343) 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, 143813 + ... + 151938.

It is an arithmetic number, because the mean of its divisors is an integer number (159706080).

Almost surely, 2^1201636313 is an apocalyptic number.

It is an amenable number.

1201636313 is a deficient number, since it is larger than the sum of its proper divisors (76012327).

1201636313 is a wasteful number, since it uses less digits than its factorization.

1201636313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296007.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 1201636313 is about 34664.6262492472. The cubic root of 1201636313 is about 1063.1413614802.

Adding to 1201636313 its reverse (3136361021), we get a palindrome (4337997334).

The spelling of 1201636313 in words is "one billion, two hundred one million, six hundred thirty-six thousand, three hundred thirteen".