223407523 has 4 divisors (see below), whose sum is σ = 236549160. Its totient is φ = 210265888.

The previous prime is 223407511. The next prime is 223407551. The reversal of 223407523 is 325704322.

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 223407523 - 2¹³ = 223399331 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223407491 and 223407500.

It is not an unprimeable number, because it can be changed into a prime (223407553) 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, 6570793 + ... + 6570826.

It is an arithmetic number, because the mean of its divisors is an integer number (59137290).

Almost surely, 2^223407523 is an apocalyptic number.

223407523 is a deficient number, since it is larger than the sum of its proper divisors (13141637).

223407523 is a wasteful number, since it uses less digits than its factorization.

223407523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13141636.

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 223407523 is about 14946.8231741732. The cubic root of 223407523 is about 606.7818724508.

The spelling of 223407523 in words is "two hundred twenty-three million, four hundred seven thousand, five hundred twenty-three".