431223340 has 12 divisors (see below), whose sum is σ = 905569056. Its totient is φ = 172489328.

The previous prime is 431223319. The next prime is 431223367. The reversal of 431223340 is 43322134.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10780564 + ... + 10780603.

It is an arithmetic number, because the mean of its divisors is an integer number (75464088).

Almost surely, 2^431223340 is an apocalyptic number.

It is an amenable number.

431223340 is an abundant number, since it is smaller than the sum of its proper divisors (474345716).

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

431223340 is a wasteful number, since it uses less digits than its factorization.

431223340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21561176 (or 21561174 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 431223340 is about 20765.9177500057. The cubic root of 431223340 is about 755.4993349011.

Adding to 431223340 its reverse (43322134), we get a palindrome (474545474).

The spelling of 431223340 in words is "four hundred thirty-one million, two hundred twenty-three thousand, three hundred forty".