2211531430313 has 4 divisors (see below), whose sum is σ = 2212171159380. Its totient is φ = 2210891701248.

The previous prime is 2211531430301. The next prime is 2211531430351. The reversal of 2211531430313 is 3130341351122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1183848450304 + 1027682980009 = 1088048^2 + 1013747^2 .

It is a cyclic number.

It is not a de Polignac number, because 2211531430313 - 2¹⁴ = 2211531413929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2211531430613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319859348 + ... + 319866261.

It is an arithmetic number, because the mean of its divisors is an integer number (553042789845).

Almost surely, 2^{2211531430313} is an apocalyptic number.

It is an amenable number.

2211531430313 is a deficient number, since it is larger than the sum of its proper divisors (639729067).

2211531430313 is an equidigital number, since it uses as much as digits as its factorization.

2211531430313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639729066.

The product of its (nonzero) digits is 6480, while the sum is 29.

Adding to 2211531430313 its reverse (3130341351122), we get a palindrome (5341872781435).

The spelling of 2211531430313 in words is "two trillion, two hundred eleven billion, five hundred thirty-one million, four hundred thirty thousand, three hundred thirteen".