30871121465 has 4 divisors (see below), whose sum is σ = 37045345764. Its totient is φ = 24696897168.

The previous prime is 30871121447. The next prime is 30871121483. The reversal of 30871121465 is 56412117803.

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

It is an interprime number because it is at equal distance from previous prime (30871121447) and next prime (30871121483).

It can be written as a sum of positive squares in 2 ways, for example, as 13194887161 + 17676234304 = 114869^2 + 132952^2 .

It is a cyclic number.

It is not a de Polignac number, because 30871121465 - 2⁶ = 30871121401 is a prime.

It is a super-2 number, since 2×30871121465² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3087112142 + ... + 3087112151.

It is an arithmetic number, because the mean of its divisors is an integer number (9261336441).

Almost surely, 2^30871121465 is an apocalyptic number.

It is an amenable number.

30871121465 is a deficient number, since it is larger than the sum of its proper divisors (6174224299).

30871121465 is an equidigital number, since it uses as much as digits as its factorization.

30871121465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6174224298.

The product of its (nonzero) digits is 40320, while the sum is 38.

The spelling of 30871121465 in words is "thirty billion, eight hundred seventy-one million, one hundred twenty-one thousand, four hundred sixty-five".