1000431421 has 8 divisors (see below), whose sum is σ = 1116761184. Its totient is φ = 888331920.

The previous prime is 1000431413. The next prime is 1000431427. The reversal of 1000431421 is 1241340001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1000431421 - 2³ = 1000431413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1000431395 and 1000431404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000431427) by changing a digit.

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, 1057066 + ... + 1058011.

It is an arithmetic number, because the mean of its divisors is an integer number (139595148).

Almost surely, 2^1000431421 is an apocalyptic number.

1000431421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1000431421 is a deficient number, since it is larger than the sum of its proper divisors (116329763).

1000431421 is a wasteful number, since it uses less digits than its factorization.

1000431421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2115131.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1000431421 is about 31629.5972310746. The cubic root of 1000431421 is about 1000.1437863245.

Adding to 1000431421 its reverse (1241340001), we get a palindrome (2241771422).

The spelling of 1000431421 in words is "one billion, four hundred thirty-one thousand, four hundred twenty-one".