3161421312 has 160 divisors (see below), whose sum is σ = 9958291200. Its totient is φ = 872030208.

The previous prime is 3161421281. The next prime is 3161421313. The reversal of 3161421312 is 2131241613.

It is a happy number.

3161421312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3161421313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306739 + ... + 316877.

It is an arithmetic number, because the mean of its divisors is an integer number (62239320).

Almost surely, 2^3161421312 is an apocalyptic number.

3161421312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3161421312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4979145600).

3161421312 is an abundant number, since it is smaller than the sum of its proper divisors (6796869888).

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

3161421312 is a wasteful number, since it uses less digits than its factorization.

3161421312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10196 (or 10180 counting only the distinct ones).

The product of its digits is 864, while the sum is 24.

The square root of 3161421312 is about 56226.5178719081. The cubic root of 3161421312 is about 1467.6667617906. Note that the first 3 decimals are identical.

Adding to 3161421312 its reverse (2131241613), we get a palindrome (5292662925).

The spelling of 3161421312 in words is "three billion, one hundred sixty-one million, four hundred twenty-one thousand, three hundred twelve".