431234240 has 84 divisors (see below), whose sum is σ = 1091068176. Its totient is φ = 162312192.

The previous prime is 431234231. The next prime is 431234249. The reversal of 431234240 is 42432134.

It is an interprime number because it is at equal distance from previous prime (431234231) and next prime (431234249).

It is not an unprimeable number, because it can be changed into a prime (431234249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90149 + ... + 94811.

Almost surely, 2^431234240 is an apocalyptic number.

431234240 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 431234240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (545534088).

431234240 is an abundant number, since it is smaller than the sum of its proper divisors (659833936).

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

431234240 is a wasteful number, since it uses less digits than its factorization.

431234240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4714 (or 4687 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 431234240 is about 20766.1801976194. The cubic root of 431234240 is about 755.5057004141.

Adding to 431234240 its reverse (42432134), we get a palindrome (473666374).

The spelling of 431234240 in words is "four hundred thirty-one million, two hundred thirty-four thousand, two hundred forty".