423186613 has 4 divisors (see below), whose sum is σ = 423229408. Its totient is φ = 423143820.

The previous prime is 423186587. The next prime is 423186623. The reversal of 423186613 is 316681324.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 423186613 - 2¹³ = 423178421 is a prime.

It is the 20572-nd Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423186623) by changing a digit.

It is a nontrivial repunit in base 20571.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1870 + ... + 29152.

It is an arithmetic number, because the mean of its divisors is an integer number (105807352).

Almost surely, 2^423186613 is an apocalyptic number.

It is an amenable number.

423186613 is a deficient number, since it is larger than the sum of its proper divisors (42795).

423186613 is a wasteful number, since it uses less digits than its factorization.

423186613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42794.

The product of its digits is 20736, while the sum is 34.

The square root of 423186613 is about 20571.5000182291. The cubic root of 423186613 is about 750.7764480420.

The spelling of 423186613 in words is "four hundred twenty-three million, one hundred eighty-six thousand, six hundred thirteen".