3161421320 has 32 divisors (see below), whose sum is σ = 7531623000. Its totient is φ = 1190181888.

The previous prime is 3161421313. The next prime is 3161421379. The reversal of 3161421320 is 231241613.

3161421320 = T₁₁₁₀₉ + T₁₁₁₁₀ + ... + T₁₁₁₅₉.

It can be written as a sum of positive squares in 4 ways, for example, as 2862892036 + 298529284 = 53506^2 + 17278^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2323895 + ... + 2325254.

Almost surely, 2^3161421320 is an apocalyptic number.

It is an amenable number.

3161421320 is an abundant number, since it is smaller than the sum of its proper divisors (4370201680).

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

3161421320 is a wasteful number, since it uses less digits than its factorization.

3161421320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4649177 (or 4649173 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 3161421320 is about 56226.5179430489. The cubic root of 3161421320 is about 1467.6667630286. Note that the first 3 decimals are identical.

Adding to 3161421320 its reverse (231241613), we get a palindrome (3392662933).

The spelling of 3161421320 in words is "three billion, one hundred sixty-one million, four hundred twenty-one thousand, three hundred twenty".