3161831049 has 12 divisors (see below), whose sum is σ = 4918404036. Its totient is φ = 1945742112.

The previous prime is 3161831033. The next prime is 3161831051. The reversal of 3161831049 is 9401381613.

3161831049 is a `hidden beast` number, since 3 + 1 + 618 + 31 + 0 + 4 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1310078025 + 1851753024 = 36195^2 + 43032^2 .

It is not a de Polignac number, because 3161831049 - 2⁴ = 3161831033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3161831009) 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, 13511982 + ... + 13512215.

It is an arithmetic number, because the mean of its divisors is an integer number (409867003).

Almost surely, 2^3161831049 is an apocalyptic number.

3161831049 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

3161831049 is a deficient number, since it is larger than the sum of its proper divisors (1756572987).

3161831049 is a wasteful number, since it uses less digits than its factorization.

3161831049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27024216 (or 27024213 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 3161831049 is about 56230.1613815931. The cubic root of 3161831049 is about 1467.7301648551.

The spelling of 3161831049 in words is "three billion, one hundred sixty-one million, eight hundred thirty-one thousand, forty-nine".