311601013 has 8 divisors (see below), whose sum is σ = 323017632. Its totient is φ = 300342096.

The previous prime is 311601001. The next prime is 311601047. The reversal of 311601013 is 310106113.

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 311601013 - 2²¹ = 309503861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311601053) 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, 35395 + ... + 43312.

It is an arithmetic number, because the mean of its divisors is an integer number (40377204).

Almost surely, 2^311601013 is an apocalyptic number.

It is an amenable number.

311601013 is a deficient number, since it is larger than the sum of its proper divisors (11416619).

311601013 is a wasteful number, since it uses less digits than its factorization.

311601013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78851.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 311601013 is about 17652.2240241846. The cubic root of 311601013 is about 677.9530521815.

Adding to 311601013 its reverse (310106113), we get a palindrome (621707126).

The spelling of 311601013 in words is "three hundred eleven million, six hundred one thousand, thirteen".