431225152640440 has 64 divisors (see below), whose sum is σ = 971074680105600. Its totient is φ = 172344636851328.

The previous prime is 431225152640417. The next prime is 431225152640461. The reversal of 431225152640440 is 44046251522134.

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, 1086922987 + ... + 1087319653.

It is an arithmetic number, because the mean of its divisors is an integer number (15173041876650).

Almost surely, 2^{431225152640440} is an apocalyptic number.

431225152640440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

431225152640440 is an abundant number, since it is smaller than the sum of its proper divisors (539849527465160).

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

431225152640440 is a wasteful number, since it uses less digits than its factorization.

431225152640440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419524 (or 419520 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 43.

The spelling of 431225152640440 in words is "four hundred thirty-one trillion, two hundred twenty-five billion, one hundred fifty-two million, six hundred forty thousand, four hundred forty".