213453523 has 2 divisors, whose sum is σ = 213453524. Its totient is φ = 213453522.

The previous prime is 213453521. The next prime is 213453571. The reversal of 213453523 is 325354312.

213453523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213453523 - 2¹ = 213453521 is a prime.

It is a super-2 number, since 2×213453523² = 91124812962223058, which contains 22 as substring.

Together with 213453521, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 213453491 and 213453500.

It is not a weakly prime, because it can be changed into another prime (213453521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106726761 + 106726762.

It is an arithmetic number, because the mean of its divisors is an integer number (106726762).

Almost surely, 2^213453523 is an apocalyptic number.

213453523 is a deficient number, since it is larger than the sum of its proper divisors (1).

213453523 is an equidigital number, since it uses as much as digits as its factorization.

213453523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 28.

The square root of 213453523 is about 14610.0486994397. The cubic root of 213453523 is about 597.6328240042.

The spelling of 213453523 in words is "two hundred thirteen million, four hundred fifty-three thousand, five hundred twenty-three".