431125215240 has 128 divisors (see below), whose sum is σ = 1321312642560. Its totient is φ = 112484987904.

The previous prime is 431125215139. The next prime is 431125215251. The reversal of 431125215240 is 42512521134.

431125215240 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 431125215198 and 431125215207.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21043882 + ... + 21064358.

It is an arithmetic number, because the mean of its divisors is an integer number (10322755020).

Almost surely, 2^431125215240 is an apocalyptic number.

431125215240 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 431125215240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (660656321280).

431125215240 is an abundant number, since it is smaller than the sum of its proper divisors (890187427320).

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

431125215240 is a wasteful number, since it uses less digits than its factorization.

431125215240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24271 (or 24267 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 431125215240 its reverse (42512521134), we get a palindrome (473637736374).

The spelling of 431125215240 in words is "four hundred thirty-one billion, one hundred twenty-five million, two hundred fifteen thousand, two hundred forty".