3506421631 has 2 divisors, whose sum is σ = 3506421632. Its totient is φ = 3506421630.

The previous prime is 3506421601. The next prime is 3506421637. The reversal of 3506421631 is 1361246053.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3506421631 - 2⁹ = 3506421119 is a prime.

It is a super-2 number, since 2×3506421631² = 24589985308689400322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3506421593 and 3506421602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3506421637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1753210815 + 1753210816.

It is an arithmetic number, because the mean of its divisors is an integer number (1753210816).

Almost surely, 2^3506421631 is an apocalyptic number.

3506421631 is a deficient number, since it is larger than the sum of its proper divisors (1).

3506421631 is an equidigital number, since it uses as much as digits as its factorization.

3506421631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 3506421631 is about 59215.0456472002. The cubic root of 3506421631 is about 1519.2224830912. Note that the first 3 decimals are identical.

Adding to 3506421631 its reverse (1361246053), we get a palindrome (4867667684).

The spelling of 3506421631 in words is "three billion, five hundred six million, four hundred twenty-one thousand, six hundred thirty-one".