210311311013 has 8 divisors (see below), whose sum is σ = 222687088920. Its totient is φ = 197936035840.

The previous prime is 210311310991. The next prime is 210311311037. The reversal of 210311311013 is 310113113012.

It can be written as a sum of positive squares in 4 ways, for example, as 41635178209 + 168676132804 = 204047^2 + 410702^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210311311013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210311310982 and 210311311000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210311311043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1049783 + ... + 1233963.

It is an arithmetic number, because the mean of its divisors is an integer number (27835886115).

Almost surely, 2^210311311013 is an apocalyptic number.

It is an amenable number.

210311311013 is a deficient number, since it is larger than the sum of its proper divisors (12375777907).

210311311013 is a wasteful number, since it uses less digits than its factorization.

210311311013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251367.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 210311311013 its reverse (310113113012), we get a palindrome (520424424025).

The spelling of 210311311013 in words is "two hundred ten billion, three hundred eleven million, three hundred eleven thousand, thirteen".