431200340 has 12 divisors (see below), whose sum is σ = 905520756. Its totient is φ = 172480128.

The previous prime is 431200339. The next prime is 431200349. The reversal of 431200340 is 43002134.

It can be written as a sum of positive squares in 2 ways, for example, as 150503824 + 280696516 = 12268^2 + 16754^2 .

It is a super-2 number, since 2×431200340² = 371867466432231200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431200349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10779989 + ... + 10780028.

It is an arithmetic number, because the mean of its divisors is an integer number (75460063).

Almost surely, 2^431200340 is an apocalyptic number.

It is an amenable number.

431200340 is an abundant number, since it is smaller than the sum of its proper divisors (474320416).

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

431200340 is a wasteful number, since it uses less digits than its factorization.

431200340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21560026 (or 21560024 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 431200340 is about 20765.3639505789. The cubic root of 431200340 is about 755.4859027326.

Adding to 431200340 its reverse (43002134), we get a palindrome (474202474).

The spelling of 431200340 in words is "four hundred thirty-one million, two hundred thousand, three hundred forty".