3115478311 has 8 divisors (see below), whose sum is σ = 3399899904. Its totient is φ = 2831256120.

The previous prime is 3115478299. The next prime is 3115478339. The reversal of 3115478311 is 1138745113.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3115478311 - 2²⁹ = 2578607399 is a prime.

It is a super-2 number, since 2×3115478311² = 19412410212622825442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3115478341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16185 + ... + 80578.

It is an arithmetic number, because the mean of its divisors is an integer number (424987488).

Almost surely, 2^3115478311 is an apocalyptic number.

3115478311 is a deficient number, since it is larger than the sum of its proper divisors (284421593).

3115478311 is a wasteful number, since it uses less digits than its factorization.

3115478311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99701.

The product of its digits is 10080, while the sum is 34.

The square root of 3115478311 is about 55816.4698901677. The cubic root of 3115478311 is about 1460.5224737615.

The spelling of 3115478311 in words is "three billion, one hundred fifteen million, four hundred seventy-eight thousand, three hundred eleven".