3430261621 has 2 divisors, whose sum is σ = 3430261622. Its totient is φ = 3430261620.

The previous prime is 3430261591. The next prime is 3430261643. The reversal of 3430261621 is 1261620343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2226518596 + 1203743025 = 47186^2 + 34695^2 .

It is a cyclic number.

It is not a de Polignac number, because 3430261621 - 2⁷ = 3430261493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3430261621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3430211621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1715130810 + 1715130811.

It is an arithmetic number, because the mean of its divisors is an integer number (1715130811).

Almost surely, 2^3430261621 is an apocalyptic number.

It is an amenable number.

3430261621 is a deficient number, since it is larger than the sum of its proper divisors (1).

3430261621 is an equidigital number, since it uses as much as digits as its factorization.

3430261621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 3430261621 is about 58568.4353641106. The cubic root of 3430261621 is about 1508.1426252691.

Adding to 3430261621 its reverse (1261620343), we get a palindrome (4691881964).

The spelling of 3430261621 in words is "three billion, four hundred thirty million, two hundred sixty-one thousand, six hundred twenty-one".