213531068939 has 4 divisors (see below), whose sum is σ = 213533336256. Its totient is φ = 213528801624.

The previous prime is 213531068827. The next prime is 213531068957. The reversal of 213531068939 is 939860135312.

It is a happy number.

213531068939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 213531068939 - 2³⁶ = 144811592203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213531068539) 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, 985979 + ... + 1182884.

It is an arithmetic number, because the mean of its divisors is an integer number (53383334064).

Almost surely, 2^213531068939 is an apocalyptic number.

213531068939 is a deficient number, since it is larger than the sum of its proper divisors (2267317).

213531068939 is an equidigital number, since it uses as much as digits as its factorization.

213531068939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2267316.

The product of its (nonzero) digits is 1049760, while the sum is 50.

The spelling of 213531068939 in words is "two hundred thirteen billion, five hundred thirty-one million, sixty-eight thousand, nine hundred thirty-nine".