3161421156 has 12 divisors (see below), whose sum is σ = 7376649392. Its totient is φ = 1053807048.

The previous prime is 3161421149. The next prime is 3161421173. The reversal of 3161421156 is 6511241613.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131725870 + ... + 131725893.

Almost surely, 2^3161421156 is an apocalyptic number.

It is an amenable number.

3161421156 is an abundant number, since it is smaller than the sum of its proper divisors (4215228236).

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

3161421156 is a wasteful number, since it uses less digits than its factorization.

3161421156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263451770 (or 263451768 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 3161421156 is about 56226.5164846623. The cubic root of 3161421156 is about 1467.6667376500. Note that the first 3 decimals are identical.

Adding to 3161421156 its reverse (6511241613), we get a palindrome (9672662769).

The spelling of 3161421156 in words is "three billion, one hundred sixty-one million, four hundred twenty-one thousand, one hundred fifty-six".