1201331013 has 8 divisors (see below), whose sum is σ = 1603020576. Its totient is φ = 800264400.

The previous prime is 1201330987. The next prime is 1201331057. The reversal of 1201331013 is 3101331021.

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

It is not a de Polignac number, because 1201331013 - 2²⁰ = 1200282437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1201330983 and 1201331001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201331063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151218 + ... + 158963.

It is an arithmetic number, because the mean of its divisors is an integer number (200377572).

Almost surely, 2^1201331013 is an apocalyptic number.

It is an amenable number.

1201331013 is a deficient number, since it is larger than the sum of its proper divisors (401689563).

1201331013 is a wasteful number, since it uses less digits than its factorization.

1201331013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311475.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1201331013 is about 34660.2223449302. Note that the first 3 decimals coincide. The cubic root of 1201331013 is about 1063.0513163347.

Adding to 1201331013 its reverse (3101331021), we get a palindrome (4302662034).

The spelling of 1201331013 in words is "one billion, two hundred one million, three hundred thirty-one thousand, thirteen".