3215011913 has 2 divisors, whose sum is σ = 3215011914. Its totient is φ = 3215011912.

The previous prime is 3215011903. The next prime is 3215011939. The reversal of 3215011913 is 3191105123.

It is an a-pointer prime, because the next prime (3215011939) can be obtained adding 3215011913 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1761648784 + 1453363129 = 41972^2 + 38123^2 .

It is a cyclic number.

It is not a de Polignac number, because 3215011913 - 2⁴ = 3215011897 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3215011903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1607505956 + 1607505957.

It is an arithmetic number, because the mean of its divisors is an integer number (1607505957).

Almost surely, 2^3215011913 is an apocalyptic number.

It is an amenable number.

3215011913 is a deficient number, since it is larger than the sum of its proper divisors (1).

3215011913 is an equidigital number, since it uses as much as digits as its factorization.

3215011913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 810, while the sum is 26.

The square root of 3215011913 is about 56701.0750603549. The cubic root of 3215011913 is about 1475.9133537621.

The spelling of 3215011913 in words is "three billion, two hundred fifteen million, eleven thousand, nine hundred thirteen".