1001231409 has 8 divisors (see below), whose sum is σ = 1381008960. Its totient is φ = 644470736.

The previous prime is 1001231401. The next prime is 1001231411. The reversal of 1001231409 is 9041321001.

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 1001231409 - 2³ = 1001231401 is a prime.

It is a super-3 number, since 3×1001231409³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1001231401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5754117 + ... + 5754290.

It is an arithmetic number, because the mean of its divisors is an integer number (172626120).

Almost surely, 2^1001231409 is an apocalyptic number.

It is an amenable number.

1001231409 is a deficient number, since it is larger than the sum of its proper divisors (379777551).

1001231409 is a wasteful number, since it uses less digits than its factorization.

1001231409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11508439.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 1001231409 is about 31642.2408972563. The cubic root of 1001231409 is about 1000.4103012965.

The spelling of 1001231409 in words is "one billion, one million, two hundred thirty-one thousand, four hundred nine".