20085347313 has 6 divisors (see below), whose sum is σ = 29012168354. Its totient is φ = 13390231536.

The previous prime is 20085347281. The next prime is 20085347327. The reversal of 20085347313 is 31374358002.

20085347313 is a `hidden beast` number, since 200 + 85 + 347 + 31 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 19591041024 + 494306289 = 139968^2 + 22233^2 .

It is not a de Polignac number, because 20085347313 - 2⁵ = 20085347281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20085327313) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1115852620 + ... + 1115852637.

Almost surely, 2^20085347313 is an apocalyptic number.

It is an amenable number.

20085347313 is a deficient number, since it is larger than the sum of its proper divisors (8926821041).

20085347313 is a wasteful number, since it uses less digits than its factorization.

20085347313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231705263 (or 2231705260 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The spelling of 20085347313 in words is "twenty billion, eighty-five million, three hundred forty-seven thousand, three hundred thirteen".