213504723 has 24 divisors (see below), whose sum is σ = 315310320. Its totient is φ = 139164480.

The previous prime is 213504701. The next prime is 213504727. The reversal of 213504723 is 327405312.

It is not a de Polignac number, because 213504723 - 2⁹ = 213504211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213504727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 180193 + ... + 181373.

It is an arithmetic number, because the mean of its divisors is an integer number (13137930).

Almost surely, 2^213504723 is an apocalyptic number.

213504723 is a deficient number, since it is larger than the sum of its proper divisors (101805597).

213504723 is a wasteful number, since it uses less digits than its factorization.

213504723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1619 (or 1616 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 213504723 is about 14611.8008130415. The cubic root of 213504723 is about 597.6806038893.

The spelling of 213504723 in words is "two hundred thirteen million, five hundred four thousand, seven hundred twenty-three".