423531340 has 12 divisors (see below), whose sum is σ = 889415856. Its totient is φ = 169412528.

The previous prime is 423531301. The next prime is 423531347. The reversal of 423531340 is 43135324.

It is not an unprimeable number, because it can be changed into a prime (423531347) 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, 10588264 + ... + 10588303.

It is an arithmetic number, because the mean of its divisors is an integer number (74117988).

Almost surely, 2^423531340 is an apocalyptic number.

It is an amenable number.

423531340 is an abundant number, since it is smaller than the sum of its proper divisors (465884516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423531340 is a wasteful number, since it uses less digits than its factorization.

423531340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21176576 (or 21176574 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 423531340 is about 20579.8770647446. The cubic root of 423531340 is about 750.9802530619.

Adding to 423531340 its reverse (43135324), we get a palindrome (466666664).

The spelling of 423531340 in words is "four hundred twenty-three million, five hundred thirty-one thousand, three hundred forty".