30681135247 has 8 divisors (see below), whose sum is σ = 35084685600. Its totient is φ = 26282717664.

The previous prime is 30681135119. The next prime is 30681135263. The reversal of 30681135247 is 74253118603.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30681135247 - 2⁷ = 30681135119 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 (30681133247) 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, 1270372 + ... + 1294297.

It is an arithmetic number, because the mean of its divisors is an integer number (4385585700).

Almost surely, 2^30681135247 is an apocalyptic number.

30681135247 is a deficient number, since it is larger than the sum of its proper divisors (4403550353).

30681135247 is a wasteful number, since it uses less digits than its factorization.

30681135247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2566385.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 30681135247 in words is "thirty billion, six hundred eighty-one million, one hundred thirty-five thousand, two hundred forty-seven".