431478904326 has 32 divisors (see below), whose sum is σ = 900516849408. Its totient is φ = 137567004960.

The previous prime is 431478904313. The next prime is 431478904327. The reversal of 431478904326 is 623409874134.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431478904327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3996616 + ... + 4103156.

It is an arithmetic number, because the mean of its divisors is an integer number (28141151544).

Almost surely, 2^431478904326 is an apocalyptic number.

431478904326 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

431478904326 is an abundant number, since it is smaller than the sum of its proper divisors (469037945082).

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

431478904326 is a wasteful number, since it uses less digits than its factorization.

431478904326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135916.

The product of its (nonzero) digits is 3483648, while the sum is 51.

The spelling of 431478904326 in words is "four hundred thirty-one billion, four hundred seventy-eight million, nine hundred four thousand, three hundred twenty-six".