3215643123349 has 2 divisors, whose sum is σ = 3215643123350. Its totient is φ = 3215643123348.

The previous prime is 3215643123337. The next prime is 3215643123373. The reversal of 3215643123349 is 9433213465123.

3215643123349 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2013291399025 + 1202351724324 = 1418905^2 + 1096518^2 .

It is a cyclic number.

It is not a de Polignac number, because 3215643123349 - 2¹⁵ = 3215643090581 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3215643123299 and 3215643123308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3215643123389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1607821561674 + 1607821561675.

It is an arithmetic number, because the mean of its divisors is an integer number (1607821561675).

Almost surely, 2^{3215643123349} is an apocalyptic number.

It is an amenable number.

3215643123349 is a deficient number, since it is larger than the sum of its proper divisors (1).

3215643123349 is an equidigital number, since it uses as much as digits as its factorization.

3215643123349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1399680, while the sum is 46.

The spelling of 3215643123349 in words is "three trillion, two hundred fifteen billion, six hundred forty-three million, one hundred twenty-three thousand, three hundred forty-nine".