423355531 has 4 divisors (see below), whose sum is σ = 423565200. Its totient is φ = 423145864.

The previous prime is 423355523. The next prime is 423355567. The reversal of 423355531 is 135553324.

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 423355531 - 2³ = 423355523 is a prime.

It is a super-2 number, since 2×423355531² = 358459811256583922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 423355493 and 423355502.

It is not an unprimeable number, because it can be changed into a prime (423350531) 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, 101776 + ... + 105853.

It is an arithmetic number, because the mean of its divisors is an integer number (105891300).

Almost surely, 2^423355531 is an apocalyptic number.

423355531 is a deficient number, since it is larger than the sum of its proper divisors (209669).

423355531 is a wasteful number, since it uses less digits than its factorization.

423355531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209668.

The product of its digits is 27000, while the sum is 31.

The square root of 423355531 is about 20575.6052401867. The cubic root of 423355531 is about 750.8763273720.

The spelling of 423355531 in words is "four hundred twenty-three million, three hundred fifty-five thousand, five hundred thirty-one".