431204340 has 48 divisors (see below), whose sum is σ = 1379855232. Its totient is φ = 98560896.

The previous prime is 431204321. The next prime is 431204351. The reversal of 431204340 is 43402134.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 512919 + ... + 513758.

It is an arithmetic number, because the mean of its divisors is an integer number (28746984).

Almost surely, 2^431204340 is an apocalyptic number.

It is an amenable number.

431204340 is an abundant number, since it is smaller than the sum of its proper divisors (948650892).

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

431204340 is a wasteful number, since it uses less digits than its factorization.

431204340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026696 (or 1026694 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 431204340 is about 20765.4602645836. The cubic root of 431204340 is about 755.4882387962.

Adding to 431204340 its reverse (43402134), we get a palindrome (474606474).

The spelling of 431204340 in words is "four hundred thirty-one million, two hundred four thousand, three hundred forty".