70331009 has 8 divisors (see below), whose sum is σ = 81741120. Its totient is φ = 59261616.

The previous prime is 70330991. The next prime is 70331017. The reversal of 70331009 is 90013307.

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 70331009 - 2¹² = 70326913 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70331029) 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, 84734 + ... + 85559.

It is an arithmetic number, because the mean of its divisors is an integer number (10217640).

Almost surely, 2^70331009 is an apocalyptic number.

It is an amenable number.

70331009 is a deficient number, since it is larger than the sum of its proper divisors (11410111).

70331009 is a wasteful number, since it uses less digits than its factorization.

70331009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170359.

The product of its (nonzero) digits is 567, while the sum is 23.

The square root of 70331009 is about 8386.3585065271. The cubic root of 70331009 is about 412.7771194508. Note that the first 3 decimals are identical.

The spelling of 70331009 in words is "seventy million, three hundred thirty-one thousand, nine".