30709870109 has 4 divisors (see below), whose sum is σ = 30711286080. Its totient is φ = 30708454140.

The previous prime is 30709870049. The next prime is 30709870123. The reversal of 30709870109 is 90107890703.

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 a de Polignac number, because none of the positive numbers 2^k-30709870109 is a prime.

It is a super-2 number, since 2×30709870109² (a number of 22 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30709870109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30709870129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 674939 + ... + 719000.

It is an arithmetic number, because the mean of its divisors is an integer number (7677821520).

Almost surely, 2^30709870109 is an apocalyptic number.

It is an amenable number.

30709870109 is a deficient number, since it is larger than the sum of its proper divisors (1415971).

30709870109 is a wasteful number, since it uses less digits than its factorization.

30709870109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1415970.

The product of its (nonzero) digits is 95256, while the sum is 44.

The spelling of 30709870109 in words is "thirty billion, seven hundred nine million, eight hundred seventy thousand, one hundred nine".