213103120331 has 4 divisors (see below), whose sum is σ = 213362686464. Its totient is φ = 212843554200.

The previous prime is 213103120291. The next prime is 213103120421. The reversal of 213103120331 is 133021301312.

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

It is a cyclic number.

It is not a de Polignac number, because 213103120331 - 2¹⁴ = 213103103947 is a prime.

It is a super-2 number, since 2×213103120331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213103120631) 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, 129781835 + ... + 129783476.

It is an arithmetic number, because the mean of its divisors is an integer number (53340671616).

Almost surely, 2^213103120331 is an apocalyptic number.

213103120331 is a deficient number, since it is larger than the sum of its proper divisors (259566133).

213103120331 is an equidigital number, since it uses as much as digits as its factorization.

213103120331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259566132.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 213103120331 its reverse (133021301312), we get a palindrome (346124421643).

The spelling of 213103120331 in words is "two hundred thirteen billion, one hundred three million, one hundred twenty thousand, three hundred thirty-one".