3216374521 has 2 divisors, whose sum is σ = 3216374522. Its totient is φ = 3216374520.

The previous prime is 3216374467. The next prime is 3216374537. The reversal of 3216374521 is 1254736123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2336658921 + 879715600 = 48339^2 + 29660^2 .

It is a cyclic number.

It is not a de Polignac number, because 3216374521 - 2⁷ = 3216374393 is a prime.

It is not a weakly prime, because it can be changed into another prime (3216374561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1608187260 + 1608187261.

It is an arithmetic number, because the mean of its divisors is an integer number (1608187261).

Almost surely, 2^3216374521 is an apocalyptic number.

It is an amenable number.

3216374521 is a deficient number, since it is larger than the sum of its proper divisors (1).

3216374521 is an equidigital number, since it uses as much as digits as its factorization.

3216374521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 34.

The square root of 3216374521 is about 56713.0895032179. The cubic root of 3216374521 is about 1476.1218348239.

The spelling of 3216374521 in words is "three billion, two hundred sixteen million, three hundred seventy-four thousand, five hundred twenty-one".