30871039499 has 4 divisors (see below), whose sum is σ = 30877395120. Its totient is φ = 30864683880.

The previous prime is 30871039457. The next prime is 30871039523. The reversal of 30871039499 is 99493017803.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30871039499 is a prime.

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 30871039499.

It is not an unprimeable number, because it can be changed into a prime (30871035499) 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, 3170519 + ... + 3180240.

It is an arithmetic number, because the mean of its divisors is an integer number (7719348780).

Almost surely, 2^30871039499 is an apocalyptic number.

30871039499 is a deficient number, since it is larger than the sum of its proper divisors (6355621).

30871039499 is an equidigital number, since it uses as much as digits as its factorization.

30871039499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6355620.

The product of its (nonzero) digits is 1469664, while the sum is 53.

The spelling of 30871039499 in words is "thirty billion, eight hundred seventy-one million, thirty-nine thousand, four hundred ninety-nine".