213321031093 has 2 divisors, whose sum is σ = 213321031094. Its totient is φ = 213321031092.

The previous prime is 213321031037. The next prime is 213321031111. The reversal of 213321031093 is 390130123312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 207227979729 + 6093051364 = 455223^2 + 78058^2 .

It is a cyclic number.

It is not a de Polignac number, because 213321031093 - 2³³ = 204731096501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213321031003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106660515546 + 106660515547.

It is an arithmetic number, because the mean of its divisors is an integer number (106660515547).

Almost surely, 2^213321031093 is an apocalyptic number.

It is an amenable number.

213321031093 is a deficient number, since it is larger than the sum of its proper divisors (1).

213321031093 is an equidigital number, since it uses as much as digits as its factorization.

213321031093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 28.

The spelling of 213321031093 in words is "two hundred thirteen billion, three hundred twenty-one million, thirty-one thousand, ninety-three".