423342131 has 4 divisors (see below), whose sum is σ = 423687264. Its totient is φ = 422997000.

The previous prime is 423342121. The next prime is 423342149. The reversal of 423342131 is 131243324.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423342131 is a prime.

It is a super-2 number, since 2×423342131² = 358437119759242322, 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 = 423342097 and 423342106.

It is not an unprimeable number, because it can be changed into a prime (423342121) 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, 170720 + ... + 173181.

It is an arithmetic number, because the mean of its divisors is an integer number (105921816).

Almost surely, 2^423342131 is an apocalyptic number.

423342131 is a deficient number, since it is larger than the sum of its proper divisors (345133).

423342131 is a wasteful number, since it uses less digits than its factorization.

423342131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345132.

The product of its digits is 1728, while the sum is 23.

The square root of 423342131 is about 20575.2796092787. The cubic root of 423342131 is about 750.8684050717.

Adding to 423342131 its reverse (131243324), we get a palindrome (554585455).

It can be divided in two parts, 4233 and 42131, that added together give a palindrome (46364).

The spelling of 423342131 in words is "four hundred twenty-three million, three hundred forty-two thousand, one hundred thirty-one".