3431897657 has 2 divisors, whose sum is σ = 3431897658. Its totient is φ = 3431897656.

The previous prime is 3431897647. The next prime is 3431897717. The reversal of 3431897657 is 7567981343.

3431897657 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., 2195953321 + 1235944336 = 46861^2 + 35156^2 .

It is a cyclic number.

It is not a de Polignac number, because 3431897657 - 2⁴ = 3431897641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3431897599 and 3431897608.

It is not a weakly prime, because it can be changed into another prime (3431897647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1715948828 + 1715948829.

It is an arithmetic number, because the mean of its divisors is an integer number (1715948829).

Almost surely, 2^3431897657 is an apocalyptic number.

It is an amenable number.

3431897657 is a deficient number, since it is larger than the sum of its proper divisors (1).

3431897657 is an equidigital number, since it uses as much as digits as its factorization.

3431897657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3810240, while the sum is 53.

The square root of 3431897657 is about 58582.4005738925. The cubic root of 3431897657 is about 1508.3823527049.

The spelling of 3431897657 in words is "three billion, four hundred thirty-one million, eight hundred ninety-seven thousand, six hundred fifty-seven".