213010311331 has 4 divisors (see below), whose sum is σ = 213011249152. Its totient is φ = 213009373512.

The previous prime is 213010311329. The next prime is 213010311343. The reversal of 213010311331 is 133113010312.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 213010311331 - 2¹ = 213010311329 is a prime.

It is a super-2 number, since 2×213010311331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213010311299 and 213010311308.

It is not an unprimeable number, because it can be changed into a prime (213010318331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110161 + ... + 661933.

It is an arithmetic number, because the mean of its divisors is an integer number (53252812288).

Almost surely, 2^213010311331 is an apocalyptic number.

213010311331 is a deficient number, since it is larger than the sum of its proper divisors (937821).

213010311331 is an equidigital number, since it uses as much as digits as its factorization.

213010311331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937820.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 213010311331 its reverse (133113010312), we get a palindrome (346123321643).

The spelling of 213010311331 in words is "two hundred thirteen billion, ten million, three hundred eleven thousand, three hundred thirty-one".