213313091 has 2 divisors, whose sum is σ = 213313092. Its totient is φ = 213313090.

The previous prime is 213313073. The next prime is 213313097. The reversal of 213313091 is 190313312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213313091 - 2⁶ = 213313027 is a prime.

It is not a weakly prime, because it can be changed into another prime (213313097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106656545 + 106656546.

It is an arithmetic number, because the mean of its divisors is an integer number (106656546).

Almost surely, 2^213313091 is an apocalyptic number.

213313091 is a deficient number, since it is larger than the sum of its proper divisors (1).

213313091 is an equidigital number, since it uses as much as digits as its factorization.

213313091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 213313091 is about 14605.2419014544. The cubic root of 213313091 is about 597.5017335080.

The spelling of 213313091 in words is "two hundred thirteen million, three hundred thirteen thousand, ninety-one".