431340 has 96 divisors (see below), whose sum is σ = 1505280. Its totient is φ = 89856.

The previous prime is 431339. The next prime is 431363. The reversal of 431340 is 43134.

431340 = T₁₆₉ + T₁₇₀ + ... + T₁₉₄.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 5421 + ... + 5499.

It is an arithmetic number, because the mean of its divisors is an integer number (15680).

2⁴³¹³⁴⁰ 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 431340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (752640).

431340 is an abundant number, since it is smaller than the sum of its proper divisors (1073940).

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

431340 is a wasteful number, since it uses less digits than its factorization.

431340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111 (or 109 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 431340 is about 656.7647980822. The cubic root of 431340 is about 75.5567457841.

Adding to 431340 its reverse (43134), we get a palindrome (474474).

The spelling of 431340 in words is "four hundred thirty-one thousand, three hundred forty".