1009431 has 12 divisors (see below), whose sum is σ = 1483560. Its totient is φ = 661200.

The previous prime is 1009417. The next prime is 1009433. The reversal of 1009431 is 1349001.

It is not a de Polignac number, because 1009431 - 2⁵ = 1009399 is a prime.

It is a super-2 number, since 2×1009431² = 2037901887522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 420 + ... + 1481.

It is an arithmetic number, because the mean of its divisors is an integer number (123630).

2^1009431 is an apocalyptic number.

1009431 is a deficient number, since it is larger than the sum of its proper divisors (474129).

1009431 is a wasteful number, since it uses less digits than its factorization.

1009431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1966 (or 1963 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1009431 is about 1004.7044341497. The cubic root of 1009431 is about 100.3133835483.

The spelling of 1009431 in words is "one million, nine thousand, four hundred thirty-one".