431327401538 has 16 divisors (see below), whose sum is σ = 707438533536. Its totient is φ = 195605115840.

The previous prime is 431327401499. The next prime is 431327401541. The reversal of 431327401538 is 835104723134.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 431327401495 and 431327401504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22629956 + ... + 22649007.

It is an arithmetic number, because the mean of its divisors is an integer number (44214908346).

Almost surely, 2^431327401538 is an apocalyptic number.

431327401538 is a deficient number, since it is larger than the sum of its proper divisors (276111131998).

431327401538 is a wasteful number, since it uses less digits than its factorization.

431327401538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45279409.

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 431327401538 in words is "four hundred thirty-one billion, three hundred twenty-seven million, four hundred one thousand, five hundred thirty-eight".