30071397623 has 4 divisors (see below), whose sum is σ = 30087403440. Its totient is φ = 30055391808.

The previous prime is 30071397589. The next prime is 30071397703. The reversal of 30071397623 is 32679317003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32679317003 = 389 ⋅84008527.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30071397623 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 (30071397023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8000090 + ... + 8003847.

It is an arithmetic number, because the mean of its divisors is an integer number (7521850860).

Almost surely, 2^30071397623 is an apocalyptic number.

30071397623 is a deficient number, since it is larger than the sum of its proper divisors (16005817).

30071397623 is a wasteful number, since it uses less digits than its factorization.

30071397623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16005816.

The product of its (nonzero) digits is 142884, while the sum is 41.

The spelling of 30071397623 in words is "thirty billion, seventy-one million, three hundred ninety-seven thousand, six hundred twenty-three".