3161262440 has 96 divisors (see below), whose sum is σ = 8302166280. Its totient is φ = 1080188928.

The previous prime is 3161262431. The next prime is 3161262443. The reversal of 3161262440 is 442621613.

It can be written as a sum of positive squares in 4 ways, for example, as 1692993316 + 1468269124 = 41146^2 + 38318^2 .

It is not an unprimeable number, because it can be changed into a prime (3161262443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 610904 + ... + 616056.

Almost surely, 2^3161262440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3161262440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4151083140).

3161262440 is an abundant number, since it is smaller than the sum of its proper divisors (5140903840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3161262440 is a wasteful number, since it uses less digits than its factorization.

3161262440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5491 (or 5480 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 3161262440 is about 56225.1050688213. The cubic root of 3161262440 is about 1467.6421763234.

The spelling of 3161262440 in words is "three billion, one hundred sixty-one million, two hundred sixty-two thousand, four hundred forty".