423731520 has 112 divisors (see below), whose sum is σ = 1494861120. Its totient is φ = 112992768.

The previous prime is 423731513. The next prime is 423731533. The reversal of 423731520 is 25137324.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15882 + ... + 33161.

Almost surely, 2^423731520 is an apocalyptic number.

423731520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

423731520 is an abundant number, since it is smaller than the sum of its proper divisors (1071129600).

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

423731520 is a wasteful number, since it uses less digits than its factorization.

423731520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49069 (or 49053 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 423731520 is about 20584.7399789261. The cubic root of 423731520 is about 751.0985501312.

Adding to 423731520 its reverse (25137324), we get a palindrome (448868844).

The spelling of 423731520 in words is "four hundred twenty-three million, seven hundred thirty-one thousand, five hundred twenty".