423523257 has 4 divisors (see below), whose sum is σ = 564697680. Its totient is φ = 282348836.

The previous prime is 423523249. The next prime is 423523259. The reversal of 423523257 is 752325324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 423523257 - 2³ = 423523249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (423523259) 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, 70587207 + ... + 70587212.

It is an arithmetic number, because the mean of its divisors is an integer number (141174420).

Almost surely, 2^423523257 is an apocalyptic number.

It is an amenable number.

423523257 is a deficient number, since it is larger than the sum of its proper divisors (141174423).

423523257 is a wasteful number, since it uses less digits than its factorization.

423523257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141174422.

The product of its digits is 50400, while the sum is 33.

The square root of 423523257 is about 20579.6806826539. The cubic root of 423523257 is about 750.9754756020.

The spelling of 423523257 in words is "four hundred twenty-three million, five hundred twenty-three thousand, two hundred fifty-seven".