3215613623 has 2 divisors, whose sum is σ = 3215613624. Its totient is φ = 3215613622.

The previous prime is 3215613613. The next prime is 3215613671. The reversal of 3215613623 is 3263165123.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3215613623 - 2⁸ = 3215613367 is a prime.

It is a super-2 number, since 2×3215613623² = 20680341944846372258, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3215613623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3215613613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1607806811 + 1607806812.

It is an arithmetic number, because the mean of its divisors is an integer number (1607806812).

Almost surely, 2^3215613623 is an apocalyptic number.

3215613623 is a deficient number, since it is larger than the sum of its proper divisors (1).

3215613623 is an equidigital number, since it uses as much as digits as its factorization.

3215613623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 32.

The square root of 3215613623 is about 56706.3807961679. The cubic root of 3215613623 is about 1476.0054235534.

Adding to 3215613623 its reverse (3263165123), we get a palindrome (6478778746).

The spelling of 3215613623 in words is "three billion, two hundred fifteen million, six hundred thirteen thousand, six hundred twenty-three".