1011431409 has 4 divisors (see below), whose sum is σ = 1348575216. Its totient is φ = 674287604.

The previous prime is 1011431387. The next prime is 1011431411. The reversal of 1011431409 is 9041341101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1011431409 - 2¹⁷ = 1011300337 is a prime.

It is a super-2 number, since 2×1011431409² = 2045986990223450562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1011431459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168571899 + ... + 168571904.

It is an arithmetic number, because the mean of its divisors is an integer number (337143804).

Almost surely, 2^1011431409 is an apocalyptic number.

It is an amenable number.

1011431409 is a deficient number, since it is larger than the sum of its proper divisors (337143807).

1011431409 is an equidigital number, since it uses as much as digits as its factorization.

1011431409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337143806.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 1011431409 is about 31803.0094330710. The cubic root of 1011431409 is about 1003.7960415020.

The spelling of 1011431409 in words is "one billion, eleven million, four hundred thirty-one thousand, four hundred nine".