431434140 has 96 divisors (see below), whose sum is σ = 1276504320. Its totient is φ = 108573696.

The previous prime is 431434123. The next prime is 431434153. The reversal of 431434140 is 41434134.

It is a super-2 number, since 2×431434140² = 372270834315079200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 431434140.

It is a congruent number.

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, 383619 + ... + 384741.

It is an arithmetic number, because the mean of its divisors is an integer number (13296920).

Almost surely, 2^431434140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 431434140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (638252160).

431434140 is an abundant number, since it is smaller than the sum of its proper divisors (845070180).

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

431434140 is a wasteful number, since it uses less digits than its factorization.

431434140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491 (or 1489 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 431434140 is about 20770.9927543197. The cubic root of 431434140 is about 755.6224214019.

Adding to 431434140 its reverse (41434134), we get a palindrome (472868274).

The spelling of 431434140 in words is "four hundred thirty-one million, four hundred thirty-four thousand, one hundred forty".