3161221877 has 4 divisors (see below), whose sum is σ = 3448605696. Its totient is φ = 2873838060.

The previous prime is 3161221813. The next prime is 3161221891. The reversal of 3161221877 is 7781221613.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3161221877 - 2⁶ = 3161221813 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3161221877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3161221277) by changing a digit.

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, 143691893 + ... + 143691914.

It is an arithmetic number, because the mean of its divisors is an integer number (862151424).

Almost surely, 2^3161221877 is an apocalyptic number.

It is an amenable number.

3161221877 is a deficient number, since it is larger than the sum of its proper divisors (287383819).

3161221877 is a wasteful number, since it uses less digits than its factorization.

3161221877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287383818.

The product of its digits is 28224, while the sum is 38.

The square root of 3161221877 is about 56224.7443480182. The cubic root of 3161221877 is about 1467.6358990607.

The spelling of 3161221877 in words is "three billion, one hundred sixty-one million, two hundred twenty-one thousand, eight hundred seventy-seven".