423313031040 has 128 divisors (see below), whose sum is σ = 1352265628320. Its totient is φ = 112636231680.

The previous prime is 423313031017. The next prime is 423313031041. The reversal of 423313031040 is 40130313324.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 423313031040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423313031041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 636220 + ... + 1118660.

Almost surely, 2^423313031040 is an apocalyptic number.

423313031040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423313031040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (676132814160).

423313031040 is an abundant number, since it is smaller than the sum of its proper divisors (928952597280).

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

423313031040 is a wasteful number, since it uses less digits than its factorization.

423313031040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482920 (or 482908 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 423313031040 its reverse (40130313324), we get a palindrome (463443344364).

The spelling of 423313031040 in words is "four hundred twenty-three billion, three hundred thirteen million, thirty-one thousand, forty".