30897860309 has 16 divisors (see below), whose sum is σ = 32038905024. Its totient is φ = 29776656000.

The previous prime is 30897860303. The next prime is 30897860321. The reversal of 30897860309 is 90306879803.

It is a cyclic number.

It is not a de Polignac number, because 30897860309 - 2⁴ = 30897860293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30897860303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1826042 + ... + 1842884.

It is an arithmetic number, because the mean of its divisors is an integer number (2002431564).

Almost surely, 2^30897860309 is an apocalyptic number.

It is an amenable number.

30897860309 is a deficient number, since it is larger than the sum of its proper divisors (1141044715).

30897860309 is a wasteful number, since it uses less digits than its factorization.

30897860309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17428.

The product of its (nonzero) digits is 1959552, while the sum is 53.

The spelling of 30897860309 in words is "thirty billion, eight hundred ninety-seven million, eight hundred sixty thousand, three hundred nine".