1000431420320 has 48 divisors (see below), whose sum is σ = 2487914987040. Its totient is φ = 379110852864.

The previous prime is 1000431420311. The next prime is 1000431420349. The reversal of 1000431420320 is 230241340001.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1000431420292 and 1000431420301.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164541602 + ... + 164547681.

It is an arithmetic number, because the mean of its divisors is an integer number (51831562230).

Almost surely, 2^{1000431420320} is an apocalyptic number.

1000431420320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000431420320 is an abundant number, since it is smaller than the sum of its proper divisors (1487483566720).

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

1000431420320 is a wasteful number, since it uses less digits than its factorization.

1000431420320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329089317 (or 329089309 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 1000431420320 its reverse (230241340001), we get a palindrome (1230672760321).

The spelling of 1000431420320 in words is "one trillion, four hundred thirty-one million, four hundred twenty thousand, three hundred twenty".