3138815331 has 12 divisors (see below), whose sum is σ = 4535027952. Its totient is φ = 2091997296.

The previous prime is 3138815291. The next prime is 3138815341. The reversal of 3138815331 is 1335188313.

It is a happy number.

3138815331 is a `hidden beast` number, since 313 + 8 + 8 + 1 + 5 + 331 = 666.

3138815331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3138815331 - 2¹¹ = 3138813283 is a prime.

It is a super-2 number, since 2×3138815331² = 19704323364241279122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3138815341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7456 + ... + 79581.

It is an arithmetic number, because the mean of its divisors is an integer number (377918996).

Almost surely, 2^3138815331 is an apocalyptic number.

3138815331 is a deficient number, since it is larger than the sum of its proper divisors (1396212621).

3138815331 is a wasteful number, since it uses less digits than its factorization.

3138815331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91050 (or 91047 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 3138815331 is about 56025.1312448262. The cubic root of 3138815331 is about 1464.1601698695.

The spelling of 3138815331 in words is "three billion, one hundred thirty-eight million, eight hundred fifteen thousand, three hundred thirty-one".