431113520 has 20 divisors (see below), whose sum is σ = 1002339120. Its totient is φ = 172445376.

The previous prime is 431113519. The next prime is 431113547. The reversal of 431113520 is 25311134.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 431113492 and 431113501.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2694380 + ... + 2694539.

It is an arithmetic number, because the mean of its divisors is an integer number (50116956).

Almost surely, 2^431113520 is an apocalyptic number.

431113520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

431113520 is an abundant number, since it is smaller than the sum of its proper divisors (571225600).

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

431113520 is a wasteful number, since it uses less digits than its factorization.

431113520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5388932 (or 5388926 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 431113520 is about 20763.2733450196. The cubic root of 431113520 is about 755.4351949118.

Adding to 431113520 its reverse (25311134), we get a palindrome (456424654).

The spelling of 431113520 in words is "four hundred thirty-one million, one hundred thirteen thousand, five hundred twenty".