3215112491 has 2 divisors, whose sum is σ = 3215112492. Its totient is φ = 3215112490.

The previous prime is 3215112443. The next prime is 3215112529. The reversal of 3215112491 is 1942115123.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3215112491 - 2⁶ = 3215112427 is a prime.

It is not a weakly prime, because it can be changed into another prime (3215111491) 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 as a sum of consecutive naturals, namely, 1607556245 + 1607556246.

It is an arithmetic number, because the mean of its divisors is an integer number (1607556246).

Almost surely, 2^3215112491 is an apocalyptic number.

3215112491 is a deficient number, since it is larger than the sum of its proper divisors (1).

3215112491 is an equidigital number, since it uses as much as digits as its factorization.

3215112491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 29.

The square root of 3215112491 is about 56701.9619678191. The cubic root of 3215112491 is about 1475.9287443599.

The spelling of 3215112491 in words is "three billion, two hundred fifteen million, one hundred twelve thousand, four hundred ninety-one".