4215421631 has 2 divisors, whose sum is σ = 4215421632. Its totient is φ = 4215421630.

The previous prime is 4215421619. The next prime is 4215421657. The reversal of 4215421631 is 1361245124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4215421631 - 2²² = 4211227327 is a prime.

It is a super-2 number, since 2×4215421631² = 35539559054205400322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 4215421594 and 4215421603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4215421831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2107710815 + 2107710816.

It is an arithmetic number, because the mean of its divisors is an integer number (2107710816).

Almost surely, 2^4215421631 is an apocalyptic number.

4215421631 is a deficient number, since it is larger than the sum of its proper divisors (1).

4215421631 is an equidigital number, since it uses as much as digits as its factorization.

4215421631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 29.

The square root of 4215421631 is about 64926.2784317721. The cubic root of 4215421631 is about 1615.4009721762.

Adding to 4215421631 its reverse (1361245124), we get a palindrome (5576666755).

The spelling of 4215421631 in words is "four billion, two hundred fifteen million, four hundred twenty-one thousand, six hundred thirty-one".