3215213129 has 2 divisors, whose sum is σ = 3215213130. Its totient is φ = 3215213128.

The previous prime is 3215213107. The next prime is 3215213159. The reversal of 3215213129 is 9213125123.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2388765625 + 826447504 = 48875^2 + 28748^2 .

It is a cyclic number.

It is not a de Polignac number, because 3215213129 - 2²⁰ = 3214164553 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 (3215213159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1607606564 + 1607606565.

It is an arithmetic number, because the mean of its divisors is an integer number (1607606565).

Almost surely, 2^3215213129 is an apocalyptic number.

It is an amenable number.

3215213129 is a deficient number, since it is larger than the sum of its proper divisors (1).

3215213129 is an equidigital number, since it uses as much as digits as its factorization.

3215213129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 29.

The square root of 3215213129 is about 56702.8493904848. The cubic root of 3215213129 is about 1475.9441438177.

The spelling of 3215213129 in words is "three billion, two hundred fifteen million, two hundred thirteen thousand, one hundred twenty-nine".