3216506407 has 2 divisors, whose sum is σ = 3216506408. Its totient is φ = 3216506406.

The previous prime is 3216506399. The next prime is 3216506431. The reversal of 3216506407 is 7046056123.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3216506407 - 2³ = 3216506399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3216506107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1608253203 + 1608253204.

It is an arithmetic number, because the mean of its divisors is an integer number (1608253204).

Almost surely, 2^3216506407 is an apocalyptic number.

3216506407 is a deficient number, since it is larger than the sum of its proper divisors (1).

3216506407 is an equidigital number, since it uses as much as digits as its factorization.

3216506407 is an evil number, because the sum of its binary digits is even.

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

The square root of 3216506407 is about 56714.2522387451. The cubic root of 3216506407 is about 1476.1420104536.

The spelling of 3216506407 in words is "three billion, two hundred sixteen million, five hundred six thousand, four hundred seven".