30312031009 has 8 divisors (see below), whose sum is σ = 32655673512. Its totient is φ = 27970095360.

The previous prime is 30312030971. The next prime is 30312031049. The reversal of 30312031009 is 90013021303.

It can be written as a sum of positive squares in 4 ways, for example, as 176400 + 30311854609 = 420^2 + 174103^2 .

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 30312031009 - 2²³ = 30303642401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30312031049) 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, 389704 + ... + 460969.

It is an arithmetic number, because the mean of its divisors is an integer number (4081959189).

Almost surely, 2^30312031009 is an apocalyptic number.

It is an amenable number.

30312031009 is a deficient number, since it is larger than the sum of its proper divisors (2343642503).

30312031009 is a wasteful number, since it uses less digits than its factorization.

30312031009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853427.

The product of its (nonzero) digits is 486, while the sum is 22.

The spelling of 30312031009 in words is "thirty billion, three hundred twelve million, thirty-one thousand, nine".