403321431315440 has 80 divisors (see below), whose sum is σ = 1022986704410496. Its totient is φ = 146659916832000.

The previous prime is 403321431315373. The next prime is 403321431315463. The reversal of 403321431315440 is 44513134123304.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 403321431315394 and 403321431315403.

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, 49971299 + ... + 57478461.

Almost surely, 2^{403321431315440} is an apocalyptic number.

403321431315440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

403321431315440 is an abundant number, since it is smaller than the sum of its proper divisors (619665273095056).

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

403321431315440 is a wasteful number, since it uses less digits than its factorization.

403321431315440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7568238 (or 7568232 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 38.

Adding to 403321431315440 its reverse (44513134123304), we get a palindrome (447834565438744).

The spelling of 403321431315440 in words is "four hundred three trillion, three hundred twenty-one billion, four hundred thirty-one million, three hundred fifteen thousand, four hundred forty".