3117117431 has 4 divisors (see below), whose sum is σ = 3118185312. Its totient is φ = 3116049552.

The previous prime is 3117117427. The next prime is 3117117463. The reversal of 3117117431 is 1347117113.

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

It is a cyclic number.

It is not a de Polignac number, because 3117117431 - 2² = 3117117427 is a prime.

It is a super-2 number, since 2×3117117431² = 19432842157288079522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3117117394 and 3117117403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3117117401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 529550 + ... + 535403.

It is an arithmetic number, because the mean of its divisors is an integer number (779546328).

Almost surely, 2^3117117431 is an apocalyptic number.

3117117431 is a deficient number, since it is larger than the sum of its proper divisors (1067881).

3117117431 is a wasteful number, since it uses less digits than its factorization.

3117117431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067880.

The product of its digits is 1764, while the sum is 29.

The square root of 3117117431 is about 55831.1510807363. The cubic root of 3117117431 is about 1460.7785662606.

The spelling of 3117117431 in words is "three billion, one hundred seventeen million, one hundred seventeen thousand, four hundred thirty-one".