213454723 has 4 divisors (see below), whose sum is σ = 213523480. Its totient is φ = 213385968.

The previous prime is 213454699. The next prime is 213454727. The reversal of 213454723 is 327454312.

It is a happy number.

213454723 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 213454723 - 2⁹ = 213454211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213454727) 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, 29490 + ... + 36007.

It is an arithmetic number, because the mean of its divisors is an integer number (53380870).

Almost surely, 2^213454723 is an apocalyptic number.

213454723 is a deficient number, since it is larger than the sum of its proper divisors (68757).

213454723 is an equidigital number, since it uses as much as digits as its factorization.

213454723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68756.

The product of its digits is 20160, while the sum is 31.

The square root of 213454723 is about 14610.0897670069. The cubic root of 213454723 is about 597.6339439327.

The spelling of 213454723 in words is "two hundred thirteen million, four hundred fifty-four thousand, seven hundred twenty-three".