3215161541 has 4 divisors (see below), whose sum is σ = 3243614412. Its totient is φ = 3186708672.

The previous prime is 3215161511. The next prime is 3215161561. The reversal of 3215161541 is 1451615123.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1266292225 + 1948869316 = 35585^2 + 44146^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3215161541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3215161511) 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, 14226266 + ... + 14226491.

It is an arithmetic number, because the mean of its divisors is an integer number (810903603).

Almost surely, 2^3215161541 is an apocalyptic number.

It is an amenable number.

3215161541 is a deficient number, since it is larger than the sum of its proper divisors (28452871).

3215161541 is a wasteful number, since it uses less digits than its factorization.

3215161541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28452870.

The product of its digits is 3600, while the sum is 29.

The square root of 3215161541 is about 56702.3944908855. The cubic root of 3215161541 is about 1475.9362499487.

Adding to 3215161541 its reverse (1451615123), we get a palindrome (4666776664).

The spelling of 3215161541 in words is "three billion, two hundred fifteen million, one hundred sixty-one thousand, five hundred forty-one".